Finding the Fourth Proportional to 89,553.61, 123,542.65 and 57,732.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,553.61 : 123,542.65 = 57,732.76 : x
2. Step 2: Convert to fraction form
   89,553.61/123,542.65 = 57,732.76/x
3. Step 3: Cross multiply
   89,553.61x = 123,542.65 × 57,732.76
4. Step 4: Simplify right side
   89,553.61x = 7,132,458,162.21
5. Step 5: Solve for x
   x = 7,132,458,162.21/89,553.61
6. Step 6: Final answer
   x = 79,644.56