Forbes. $50.5 billion. David David Koch’s net worth is $41.7 billion 2019 ranking David Koch www.forbes.com/profile/david-koch estimates David Koch according to Forbes Forbes ocupaba billions Forbes listed David Koch David Koch billions ocupaba ifølge Forbes. David Koch David Koch $25 billion Forbes New York billionaire David Koch David Koch Forbes Forbes David Koch EACH billions $25 billion David Koch Executive Vice President David David Koch ranked by David Koch http://www.forbes.com/profile/david-koch/# David Koch Forbes oversees chemical production for Koch Industries David Koch David Koch David Koch David Koch worth $31 billion David Koch David Koch is worth "David Koch - Forbes" David Koch David Forbes David Koch Executive Vice President #6 David Koch Forbes David Koch $68 billion David Koch David Koch «David Koch – Forbes» Дэвид Кох David Koch David ranked by Forbes David Koch David Koch David Koch David Koch David Koch Forbes David Koch ifølge Forbes. "David Koch" „David Koch” was ranked by Forbes extraordinary wealth David Koch David Koch David Koch “David Koch – Forbes” David Koch David David Koch David Koch David Koch www.forbes.com/profile/david-koch Forbes Forbes His brother David David Koch Forbes David Koch 31 billion David Koch Forbes Forbes Forbes’ The World's Billionaires : #6 David Koch David Koch $36 billion David Koch David Koch billions Forbes majority control of Koch Industries ifølge Forbes. David Koch 11de rijkste en 29ste machtigste David Koch Forbes „David Koch – Forbes” personal David Koch ocupaba “David Koch” David Koch $68 billion His brother David Forbes listed brothers $68 billion Forbes ranking by Forbes 11th richest and 29th most powerful David Koch David Forbes