Finding the Fourth Proportional to 64,417.28, 88,850.86 and 62,249.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,417.28 : 88,850.86 = 62,249.72 : x
2. Step 2: Convert to fraction form
   64,417.28/88,850.86 = 62,249.72/x
3. Step 3: Cross multiply
   64,417.28x = 88,850.86 × 62,249.72
4. Step 4: Simplify right side
   64,417.28x = 5,530,941,156.76
5. Step 5: Solve for x
   x = 5,530,941,156.76/64,417.28
6. Step 6: Final answer
   x = 85,861.14