Finding the Fourth Proportional to 89,380.18, 133,866.07 and 42,665.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,380.18 : 133,866.07 = 42,665.86 : x
2. Step 2: Convert to fraction form
   89,380.18/133,866.07 = 42,665.86/x
3. Step 3: Cross multiply
   89,380.18x = 133,866.07 × 42,665.86
4. Step 4: Simplify right side
   89,380.18x = 5,711,511,001.37
5. Step 5: Solve for x
   x = 5,711,511,001.37/89,380.18
6. Step 6: Final answer
   x = 63,901.31