Finding the Fourth Proportional to 71,128.83, 98,158.82 and 39,298.46

Step by Step Solution

1. Step 1: Write the proportion equation
   71,128.83 : 98,158.82 = 39,298.46 : x
2. Step 2: Convert to fraction form
   71,128.83/98,158.82 = 39,298.46/x
3. Step 3: Cross multiply
   71,128.83x = 98,158.82 × 39,298.46
4. Step 4: Simplify right side
   71,128.83x = 3,857,490,510.32
5. Step 5: Solve for x
   x = 3,857,490,510.32/71,128.83
6. Step 6: Final answer
   x = 54,232.45