Finding the Fourth Proportional to 71,111.40, 98,132.76 and 39,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   71,111.40 : 98,132.76 = 39,280.56 : x
2. Step 2: Convert to fraction form
   71,111.40/98,132.76 = 39,280.56/x
3. Step 3: Cross multiply
   71,111.40x = 98,132.76 × 39,280.56
4. Step 4: Simplify right side
   71,111.40x = 3,854,709,767.15
5. Step 5: Solve for x
   x = 3,854,709,767.15/71,111.40
6. Step 6: Final answer
   x = 54,206.64