David Koch, billionaire conservative activist and philanthropist, dead at 79.
The brothers were tied as 11th richest in the world in a ranking by Forbes. At the time of his death, David Koch was worth $42.4 billion.
With the wealth from their business, the Koch brothers helped to build a massive conservative network of donors for organizations that work to mobilize voters and sway elected officials in support of libertarian-leaning economic policies.
Let the celebrations begin?