Finding the Fourth Proportional to 69,760.17, 96,264.72 and 39,131.58

Step by Step Solution

1. Step 1: Write the proportion equation
   69,760.17 : 96,264.72 = 39,131.58 : x
2. Step 2: Convert to fraction form
   69,760.17/96,264.72 = 39,131.58/x
3. Step 3: Cross multiply
   69,760.17x = 96,264.72 × 39,131.58
4. Step 4: Simplify right side
   69,760.17x = 3,766,990,591.86
5. Step 5: Solve for x
   x = 3,766,990,591.86/69,760.17
6. Step 6: Final answer
   x = 53,999.16