I don't believe that it is a given that money and power impact infidelity.
Statistically the figure seems to be about 25% but my original comment was related to "100 other guys on tour are doing the same thing." Since there are not 400 players on the PGA tour, this is an unfair statement to make. If you want to argue that there have been other PGA players that have been unfaithful, I wouldn't disagree.