Finding the Fourth Proportional to 71,075.28, 98,081.31 and 39,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,075.28 : 98,081.31 = 39,243.50 : x
2. Step 2: Convert to fraction form
   71,075.28/98,081.31 = 39,243.50/x
3. Step 3: Cross multiply
   71,075.28x = 98,081.31 × 39,243.50
4. Step 4: Simplify right side
   71,075.28x = 3,849,053,637.69
5. Step 5: Solve for x
   x = 3,849,053,637.69/71,075.28
6. Step 6: Final answer
   x = 54,154.60