Finding the Fourth Proportional to 71,673.53, 98,900.87 and 39,402.83

Step by Step Solution

1. Step 1: Write the proportion equation
   71,673.53 : 98,900.87 = 39,402.83 : x
2. Step 2: Convert to fraction form
   71,673.53/98,900.87 = 39,402.83/x
3. Step 3: Cross multiply
   71,673.53x = 98,900.87 × 39,402.83
4. Step 4: Simplify right side
   71,673.53x = 3,896,973,475.94
5. Step 5: Solve for x
   x = 3,896,973,475.94/71,673.53
6. Step 6: Final answer
   x = 54,371.17