Finding the Fourth Proportional to 80,839.39, 111,560.31 and 45,029.99

Step by Step Solution

1. Step 1: Write the proportion equation
   80,839.39 : 111,560.31 = 45,029.99 : x
2. Step 2: Convert to fraction form
   80,839.39/111,560.31 = 45,029.99/x
3. Step 3: Cross multiply
   80,839.39x = 111,560.31 × 45,029.99
4. Step 4: Simplify right side
   80,839.39x = 5,023,559,643.70
5. Step 5: Solve for x
   x = 5,023,559,643.70/80,839.39
6. Step 6: Final answer
   x = 62,142.47