Complex sentence: Vishwanath Khote was a son of the millionaire family who were that time largest share brokers and road contractors he was mechanical engineer from Banaras Hindu University who died young.
Split into simpler sentences: Vishwanath Khote was from a millionaire family who were, at that time, the largest share brokers and road contractors. Vishwanath was a mechanical engineer from Banaras Hindu University who died young.