Finding the Fourth Proportional to 71,443.27, 98,592.15 and 39,612.70

Step by Step Solution

1. Step 1: Write the proportion equation
   71,443.27 : 98,592.15 = 39,612.70 : x
2. Step 2: Convert to fraction form
   71,443.27/98,592.15 = 39,612.70/x
3. Step 3: Cross multiply
   71,443.27x = 98,592.15 × 39,612.70
4. Step 4: Simplify right side
   71,443.27x = 3,905,501,260.31
5. Step 5: Solve for x
   x = 3,905,501,260.31/71,443.27
6. Step 6: Final answer
   x = 54,665.77