Finding the Fourth Proportional to 89,665.92, 123,780.96 and 51,932.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,665.92 : 123,780.96 = 51,932.88 : x
2. Step 2: Convert to fraction form
   89,665.92/123,780.96 = 51,932.88/x
3. Step 3: Cross multiply
   89,665.92x = 123,780.96 × 51,932.88
4. Step 4: Simplify right side
   89,665.92x = 6,428,301,741.96
5. Step 5: Solve for x
   x = 6,428,301,741.96/89,665.92
6. Step 6: Final answer
   x = 71,691.69