user: Question: What is the highest rank of a company that has 1,715.8 billion in assets? 
Columns: ['Rank', 'Company', 'Headquarters', 'Industry', 'Sales (billion $)', 'Profits (billion $)', 'Assets (billion $)', 'Market Value (billion $)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'HSBC', 'UK', 'Banking', '146.1', '19.1', '2,349.0', '180.8']
SQL:

assistant: SELECT MAX("Rank") FROM "Table" WHERE "Assets (billion $)" = '1,715.8';