Finding the Fourth Proportional to 89,355.67, 133,829.37 and 42,641.35

Step by Step Solution

1. Step 1: Write the proportion equation
   89,355.67 : 133,829.37 = 42,641.35 : x
2. Step 2: Convert to fraction form
   89,355.67/133,829.37 = 42,641.35/x
3. Step 3: Cross multiply
   89,355.67x = 133,829.37 × 42,641.35
4. Step 4: Simplify right side
   89,355.67x = 5,706,665,006.45
5. Step 5: Solve for x
   x = 5,706,665,006.45/89,355.67
6. Step 6: Final answer
   x = 63,864.61