Sharon, let's think a little more about that - before you rush off to buy a 100MP Fuji ...
I'm guessing your sensor is APS-C so I estimate your original capture was about 6000x4000px ... which you posted at about 1600px wide. So down-sampled to a quarter size - assuming no cropping.
Instead of downsizing, In this particular case you could have cropped the original and then posted it here without loss of quality. As you probably know, CinC is none too kind to our posted images anyway.
So, please take the comment for what it's worth ... you don't
need any more MP, IMHO.