Finding the Fourth Proportional to 89,200.80, 133,647.60 and 42,352.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,200.80 : 133,647.60 = 42,352.80 : x
2. Step 2: Convert to fraction form
   89,200.80/133,647.60 = 42,352.80/x
3. Step 3: Cross multiply
   89,200.80x = 133,647.60 × 42,352.80
4. Step 4: Simplify right side
   89,200.80x = 5,660,350,073.28
5. Step 5: Solve for x
   x = 5,660,350,073.28/89,200.80
6. Step 6: Final answer
   x = 63,456.27