Finding the Fourth Proportional to 80,849.52, 121,291.56 and 28,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,849.52 : 121,291.56 = 28,260.72 : x
2. Step 2: Convert to fraction form
   80,849.52/121,291.56 = 28,260.72/x
3. Step 3: Cross multiply
   80,849.52x = 121,291.56 × 28,260.72
4. Step 4: Simplify right side
   80,849.52x = 3,427,786,815.52
5. Step 5: Solve for x
   x = 3,427,786,815.52/80,849.52
6. Step 6: Final answer
   x = 42,397.12