1. Michael Dell $15.9 Billion: Dish Washer
Michael Dell is the co-founder and the CEO of one of the most popular personal computer company of the World, Dell. He initially started working by washing dishes when he was 12 in a Chinese restaurant. He was then promoted to a water boy in the same restaurant and later was promoted to the assistant maitre d', soon before he moved to a Mexican restaurant. He then started selling subscriptions to the Houston Post through phone calls. He also bought old computers, repaired them and started selling them door to door before starting his own company that made great business throughout the computing world.