Mr Davies, also a skydiver, told the Daily Mail Mr Cornick's right femur "snapped in three places".
"His left arm between his shoulder and elbow is in half and he has got cuts and bruises and damaged his kneecap. In Fiji, they only have small hospitals. They had a look at him, but couldn't pin and screw that together.
"I got on Facebook and spoke to a few skydivers ... I put up the page where we can all go. His parents haven't got that sort of money, I haven't got that sort of money. Now, we have saved his leg and possibly his life."
The money was raised in hours, and a medical evacuation organised.
Mr Cornick had a four-hour operation on his leg in Auckland on Saturday, and is understood to have had an operation on his arm yesterday.
Several of his friends are also in New Zealand and have been keeping supporters updated on his progress with photos of him in hospital, and of the x-ray of his broken femur.
Mr Cornick is understood to live and work in Nadi as a tandem instructor with Sky Dive Fiji.