Can i fix or run my 110V pedestal fan on 220V?
Don't do it. Plugging the fan into 220V will draw twice the current and result in 4 times the power delivered to the motor, so it will spin like crazy. There is risk of overheating, fire, fan blades dislodging and bearings overheating. 

In some cases the motor can be rewired for a different voltage but it takes a fair bit of experience and knowledge to do this correctly. It's also unlikely that a simple fan motor will support this, so it's definitely not worth taking the risk. 

I would recommend taking the loss and properly disposing of the fan. Properly disposing includes making sure no one else accidentally plugs it in. So please don't give it away or resell it unless you are absolutely sure that the recipient knows what he/she is doing. I know it's a bit painful, but it's the right thing to do.