The 10 Richest families in America, their worth and expensive lifestyle (With Pics)

4. Cargill family

Cargill family inherited their wealth from William W. Cargill, founder of the Cargill Inc. The company was founded by him in 1865, after the Civil War in the State of Iowa. The company, with its $136.7 billion revenue and $2.31 billion earnings, is now the largest privately held corporation in the United States. Cargill Inc. is one of the biggest companies in agricultural commodities. They are mainly known as the major trader of grains and edible oil. The Cargill family now holds 90% shares of the Cargill Inc. As the company is a privately owned entity, the exact wealth of the family is unknown. But in recent years, the members of the Cargill family collectively have around $43 billion of fortune according to Forbes. The notable members of the family, James Cargill and Margaret Cargill, had an estimated $1.8 billion each before their death in 2006.