Finding the Fourth Proportional to 71,707.98, 98,945.37 and 39,876.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71,707.98 : 98,945.37 = 39,876.06 : x
2. Step 2: Convert to fraction form
   71,707.98/98,945.37 = 39,876.06/x
3. Step 3: Cross multiply
   71,707.98x = 98,945.37 × 39,876.06
4. Step 4: Simplify right side
   71,707.98x = 3,945,551,510.84
5. Step 5: Solve for x
   x = 3,945,551,510.84/71,707.98
6. Step 6: Final answer
   x = 55,022.49