I have discovered that by 2011, they had invested a total of $91m:
http://nikeinc.com/news/nike-foundation-and-buffetts-join-to-invest-100-million-in-girls
However, I am struggling to calculate the Cost of Debt in order to ascertain the Discount Rate for the NPV calculation.
I cannot seem to find whether Nike used its own equity for that investment or whether it was a loan and how much the interest rate was.
I could find an average of all of Nike's Long-term Debt for 2011 but will that be accurate enough?
Please help, thanks.