Finding the Fourth Proportional to 71,708.24, 98,949.34 and 39,875.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,708.24 : 98,949.34 = 39,875.24 : x
2. Step 2: Convert to fraction form
   71,708.24/98,949.34 = 39,875.24/x
3. Step 3: Cross multiply
   71,708.24x = 98,949.34 × 39,875.24
4. Step 4: Simplify right side
   71,708.24x = 3,945,628,680.34
5. Step 5: Solve for x
   x = 3,945,628,680.34/71,708.24
6. Step 6: Final answer
   x = 55,023.37