Finding the Fourth Proportional to 80,892.27, 121,355.69 and 28,303.47

Step by Step Solution

1. Step 1: Write the proportion equation
   80,892.27 : 121,355.69 = 28,303.47 : x
2. Step 2: Convert to fraction form
   80,892.27/121,355.69 = 28,303.47/x
3. Step 3: Cross multiply
   80,892.27x = 121,355.69 × 28,303.47
4. Step 4: Simplify right side
   80,892.27x = 3,434,786,989.73
5. Step 5: Solve for x
   x = 3,434,786,989.73/80,892.27
6. Step 6: Final answer
   x = 42,461.25