Finding the Fourth Proportional to 80,887.52, 121,348.56 and 28,298.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,887.52 : 121,348.56 = 28,298.72 : x
2. Step 2: Convert to fraction form
   80,887.52/121,348.56 = 28,298.72/x
3. Step 3: Cross multiply
   80,887.52x = 121,348.56 × 28,298.72
4. Step 4: Simplify right side
   80,887.52x = 3,434,008,921.84
5. Step 5: Solve for x
   x = 3,434,008,921.84/80,887.52
6. Step 6: Final answer
   x = 42,454.13