Top 10 Richest People in the World 2019

9 David Koch- Net Worth $60 Billion

David Koch is a business magnate and philanthropist. He also works as a political activist and chemical engineer. In 1970, he tied Koch Industries, which is currently the 2nd largest privately-owned company in the United States. He became the president of Koch Engineering in 1979 and a co-owner at Koch Industries in 1983.

David was an executive vice-president until his retirement in 2018. He is currently ranked 9th on the list of the 10 most wealthy people in the world, with a net worth of $60 billion.