This question recently made its way to me. I figured I’d give it a shot. Here we go…
He answered and said, Lo, I see four men loose, walking in the midst of the fire, and they have no hurt; and the form of the fourth is like the Son of God. Dan 3:25 KJV
The KJV is the only version that says “Son of God”. Although, it was fascnitating to discover that the original King James of 1611 did not capitalize the word son.
He answered and said, Loe, I see foure men loose, walking in the midst of the fire, and they haue no hurt, and the forme of the fourth is like the sonne of God. Dan 3:25 1611 KJV
Here is the passage from two of the more modern literal Bibles: