Aye! Quick answer is "no"... but if you buy special bolts then the 4x100PCD wheel can fit on the 4x98PCD hub you have.
You must also change the spigot rings for items of the right size for the Fiat hub (58.1mm) and yet inside the wheel centre bore.
A good wheel/tyre place will be able to supply the bolts ("wobble bolts") and the spigot rings.
The bolts will have to be long enough to poke out the back of the wheels but not toooo much. Because the Corse wheel is different, the length of the wobble bolts you need might be different to the length of your existing bolts. Compare how much bolt thread pokes out the back of each wheel and adjust the length of wobble bolt you order to keep the projecting length the same.
Ralf S.