Finding the Fourth Proportional to 72,854.24, 109,216.52 and 28,470.89

Step by Step Solution

1. Step 1: Write the proportion equation
   72,854.24 : 109,216.52 = 28,470.89 : x
2. Step 2: Convert to fraction form
   72,854.24/109,216.52 = 28,470.89/x
3. Step 3: Cross multiply
   72,854.24x = 109,216.52 × 28,470.89
4. Step 4: Simplify right side
   72,854.24x = 3,109,491,764.56
5. Step 5: Solve for x
   x = 3,109,491,764.56/72,854.24
6. Step 6: Final answer
   x = 42,681.00