Finding the Fourth Proportional to 71,665.84, 98,900.04 and 39,401.82

Step by Step Solution

1. Step 1: Write the proportion equation
   71,665.84 : 98,900.04 = 39,401.82 : x
2. Step 2: Convert to fraction form
   71,665.84/98,900.04 = 39,401.82/x
3. Step 3: Cross multiply
   71,665.84x = 98,900.04 × 39,401.82
4. Step 4: Simplify right side
   71,665.84x = 3,896,841,574.07
5. Step 5: Solve for x
   x = 3,896,841,574.07/71,665.84
6. Step 6: Final answer
   x = 54,375.16