Finding the Fourth Proportional to 89,337.47, 133,970.43 and 39,382.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89,337.47 : 133,970.43 = 39,382.05 : x
2. Step 2: Convert to fraction form
   89,337.47/133,970.43 = 39,382.05/x
3. Step 3: Cross multiply
   89,337.47x = 133,970.43 × 39,382.05
4. Step 4: Simplify right side
   89,337.47x = 5,276,030,172.78
5. Step 5: Solve for x
   x = 5,276,030,172.78/89,337.47
6. Step 6: Final answer
   x = 59,057.31