Finding the Fourth Proportional to 80,911.29, 111,658.11 and 45,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   80,911.29 : 111,658.11 = 45,103.59 : x
2. Step 2: Convert to fraction form
   80,911.29/111,658.11 = 45,103.59/x
3. Step 3: Cross multiply
   80,911.29x = 111,658.11 × 45,103.59
4. Step 4: Simplify right side
   80,911.29x = 5,036,181,613.61
5. Step 5: Solve for x
   x = 5,036,181,613.61/80,911.29
6. Step 6: Final answer
   x = 62,243.25