Finding the Fourth Proportional to 39,949.47, 55,363.32 and 39,385.71

Step by Step Solution

1. Step 1: Write the proportion equation
   39,949.47 : 55,363.32 = 39,385.71 : x
2. Step 2: Convert to fraction form
   39,949.47/55,363.32 = 39,385.71/x
3. Step 3: Cross multiply
   39,949.47x = 55,363.32 × 39,385.71
4. Step 4: Simplify right side
   39,949.47x = 2,180,523,666.16
5. Step 5: Solve for x
   x = 2,180,523,666.16/39,949.47
6. Step 6: Final answer
   x = 54,582.04