cash and a commitment to fund the capital needs of the business until such time as its cumulative funding is equal to funding that we have provided from inception through the effective date of the transaction . the transaction created a new joint venture which does business as comercia global payments brazil . as a result of the transaction , we deconsolidated global payments brazil , and we apply the equity method of accounting to our retained interest in comercia global payments brazil . we recorded a gain on the transaction of $ 2.1 million which is included in interest and other income in the consolidated statement of income for the fiscal year ended may 31 , 2014 . the results of the brazil operation from inception until the restructuring into a joint venture on september 30 , 2013 were not material to our consolidated results of operations , and the assets and liabilities that we derecognized were not material to our consolidated balance sheet . american express portfolio on october 24 , 2013 , we acquired a merchant portfolio in the czech republic from american express limited for $ 1.9 million . the acquired assets have been classified as customer-related intangible assets and contract-based intangible assets with estimated amortization periods of 10 years . paypros on march 4 , 2014 , we completed the acquisition of 100% ( 100 % ) of the outstanding stock of payment processing , inc . ( 201cpaypros 201d ) for $ 420.0 million in cash plus $ 7.7 million in cash for working capital , subject to adjustment based on a final determination of working capital . we funded the acquisition with a combination of cash on hand and proceeds from our new term loan . paypros , based in california , is a provider of fully-integrated payment solutions for small-to-medium sized merchants in the united states . paypros delivers its products and services through a network of technology-based enterprise software partners to vertical markets that are complementary to the markets served by accelerated payment technologies ( 201capt 201d ) , which we acquired in october 2012 . we acquired paypros to expand our direct distribution capabilities in the united states and to further enhance our existing integrated solutions offerings . this acquisition was recorded as a business combination , and the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated fair values . due to the timing of this transaction , the allocation of the purchase price is preliminary pending final valuation of intangible assets and deferred income taxes as well as resolution of the working capital settlement discussed above . the purchase price of paypros was determined by analyzing the historical and prospective financial statements . acquisition costs associated with this purchase were not material . the following table summarizes the preliminary purchase price allocation ( in thousands ) : .

$ 271577: customer-related intangible assets: 147500
contract-based intangible assets: 31000
acquired technology: 10700
fixed assets: 1680
other assets: 4230
total assets acquired: 466687
deferred income taxes: -38949
net assets acquired: 427738

the preliminary purchase price allocation resulted in goodwill , included in the north america merchant services segment , of $ 271.6 million . such goodwill is attributable primarily to synergies with the services offered and markets served by paypros . the goodwill associated with the acquisition is not deductible for tax purposes . the customer-related intangible assets and the contract-based intangible assets have an estimated amortization period of 13 years . the acquired technology has an estimated amortization period of 7 years. .

Questions:
what was the value of acquired technology?
what was the value of contract-based intangible assets?
what is the sum?
what is the total sum, including customer-related intangible assets?
what is the proportion of these assets compared to total assets acquired?

Answers:
10700
31000
41700
189200
40.5%