Finding the Fourth Proportional to 89,217.72, 123,159.96 and 62,465.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,217.72 : 123,159.96 = 62,465.40 : x
2. Step 2: Convert to fraction form
   89,217.72/123,159.96 = 62,465.40/x
3. Step 3: Cross multiply
   89,217.72x = 123,159.96 × 62,465.40
4. Step 4: Simplify right side
   89,217.72x = 7,693,236,165.38
5. Step 5: Solve for x
   x = 7,693,236,165.38/89,217.72
6. Step 6: Final answer
   x = 86,229.91