Finding the Fourth Proportional to 80,840.72, 111,555.24 and 45,028.88

Step by Step Solution

1. Step 1: Write the proportion equation
   80,840.72 : 111,555.24 = 45,028.88 : x
2. Step 2: Convert to fraction form
   80,840.72/111,555.24 = 45,028.88/x
3. Step 3: Cross multiply
   80,840.72x = 111,555.24 × 45,028.88
4. Step 4: Simplify right side
   80,840.72x = 5,023,207,515.33
5. Step 5: Solve for x
   x = 5,023,207,515.33/80,840.72
6. Step 6: Final answer
   x = 62,137.10