100,000,000,000 (100b total XRP) divided by 76 (xrp/usd price) = $1,315,789,473

1,315,789,473 divided by $116 (Bitcoin price) =  11,343,012

So 11.3 million Bitcoins.

I don't think this is a very meaningful number though...the market for XRP has barely formed. In addition, XRPs become "sequestered" as reserves which means they are no longer available to sell or transfer. These factors make any estimate of "XRP valuation" to be quite unreliable.