Bill Gate

Bill Gates
Net Worth: R553-billion
Company: Microsoft

A man who needs no introduction, Gates has not only been eminent in the world of PCs and Microsoft, but has also been a recurring figure in lists of the world's wealthiest people and was in fact the wealthiest from 1995-2009. In 2011, he was the wealthiest American and the second richest worldwide. He started out as a brilliant student who enrolled at Harvard College with a SAT score of 1590/1600, and was the first to propose a faster algorithm for pancake sorting.