Finding the Fourth Proportional to 89,789.92, 134,655.72 and 42,397.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,789.92 : 134,655.72 = 42,397.68 : x
2. Step 2: Convert to fraction form
   89,789.92/134,655.72 = 42,397.68/x
3. Step 3: Cross multiply
   89,789.92x = 134,655.72 × 42,397.68
4. Step 4: Simplify right side
   89,789.92x = 5,709,090,126.73
5. Step 5: Solve for x
   x = 5,709,090,126.73/89,789.92
6. Step 6: Final answer
   x = 63,582.75