Finding the Fourth Proportional to 71,401.67, 106,902.82 and 53,816.39

Step by Step Solution

1. Step 1: Write the proportion equation
   71,401.67 : 106,902.82 = 53,816.39 : x
2. Step 2: Convert to fraction form
   71,401.67/106,902.82 = 53,816.39/x
3. Step 3: Cross multiply
   71,401.67x = 106,902.82 × 53,816.39
4. Step 4: Simplify right side
   71,401.67x = 5,753,123,184.16
5. Step 5: Solve for x
   x = 5,753,123,184.16/71,401.67
6. Step 6: Final answer
   x = 80,574.08