Finding the Fourth Proportional to 111,648.29, 154,035.86 and 71,385.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,648.29 : 154,035.86 = 71,385.62 : x
2. Step 2: Convert to fraction form
   111,648.29/154,035.86 = 71,385.62/x
3. Step 3: Cross multiply
   111,648.29x = 154,035.86 × 71,385.62
4. Step 4: Simplify right side
   111,648.29x = 10,995,944,241.23
5. Step 5: Solve for x
   x = 10,995,944,241.23/111,648.29
6. Step 6: Final answer
   x = 98,487.35