Is it possible to cure stage IV colon cancer that has limited number of mets to lung and liver?

Hmmmm. You know, the terms "stage iv" and "cure" are not usually put in the same sentence by oncologists because in theory, most stage IV cancers are incurable. That said, I have seen a handful of patients who had a limited number of metastases to the liver or lung and are in remission years later after aggressive surgery and chemo. Don't lose hope. Best wishes.
Possible, Yes. But not probable. If all the metastatic disease are amenable to resection, and the patient is able to tolerate major liver and chest surgery for cure, it is possible. However there are many anatomic reasons why such disease in not appropriate for that to be attempted. If the patient is able to undergo curative resection the failure rate (or recurence rate is >75%.