Finding the Fourth Proportional to 64,780.88, 89,419.98 and 37,932.02

Step by Step Solution

1. Step 1: Write the proportion equation
   64,780.88 : 89,419.98 = 37,932.02 : x
2. Step 2: Convert to fraction form
   64,780.88/89,419.98 = 37,932.02/x
3. Step 3: Cross multiply
   64,780.88x = 89,419.98 × 37,932.02
4. Step 4: Simplify right side
   64,780.88x = 3,391,880,469.76
5. Step 5: Solve for x
   x = 3,391,880,469.76/64,780.88
6. Step 6: Final answer
   x = 52,359.28