Finding the Fourth Proportional to 71,145.31, 98,180.56 and 39,314.21

Step by Step Solution

1. Step 1: Write the proportion equation
   71,145.31 : 98,180.56 = 39,314.21 : x
2. Step 2: Convert to fraction form
   71,145.31/98,180.56 = 39,314.21/x
3. Step 3: Cross multiply
   71,145.31x = 98,180.56 × 39,314.21
4. Step 4: Simplify right side
   71,145.31x = 3,859,891,089.44
5. Step 5: Solve for x
   x = 3,859,891,089.44/71,145.31
6. Step 6: Final answer
   x = 54,253.63