Finding the Fourth Proportional to 71,062.79, 98,066.05 and 39,231

Step by Step Solution

1. Step 1: Write the proportion equation
   71,062.79 : 98,066.05 = 39,231 : x
2. Step 2: Convert to fraction form
   71,062.79/98,066.05 = 39,231/x
3. Step 3: Cross multiply
   71,062.79x = 98,066.05 × 39,231
4. Step 4: Simplify right side
   71,062.79x = 3,847,229,109.47
5. Step 5: Solve for x
   x = 3,847,229,109.47/71,062.79
6. Step 6: Final answer
   x = 54,138.45