Is your Fusion 2012 or newer? Does it have an automatic transmission with AWD?
First determine if you’re 2012 Ford Fusion AWD vehicle equipped with an automatic 6F35 transmission was built on or after 3/30/2012. If that is true it can not be towed four down, per Ford. You would need a car trailer.
If your Fusion AWD is older than the above date have a Ford dealer perform (TSB) 11-07-15 so it can be towed four down.
You then would need a tow bar (new or used). A base plate that goes on the front of your Fusion (behind the grill) so it can connect to the tow bar (I had mine installed at a body shop for $100.).
Then for safeties sake you well need some kind of braking device for the Fusion. Go to the “Dinghy Towing” section of this site and read, read and then read some more about all the different braking systems. I ended up with a used “Brake Buddy” after a lot of reading.