Finding the Fourth Proportional to 71,796.52, 99,078.26 and 39,965.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,796.52 : 99,078.26 = 39,965.48 : x
2. Step 2: Convert to fraction form
   71,796.52/99,078.26 = 39,965.48/x
3. Step 3: Cross multiply
   71,796.52x = 99,078.26 × 39,965.48
4. Step 4: Simplify right side
   71,796.52x = 3,959,710,218.46
5. Step 5: Solve for x
   x = 3,959,710,218.46/71,796.52
6. Step 6: Final answer
   x = 55,151.84