Finding the Fourth Proportional to 72,648.28, 108,943.98 and 28,269.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,648.28 : 108,943.98 = 28,269.16 : x
2. Step 2: Convert to fraction form
   72,648.28/108,943.98 = 28,269.16/x
3. Step 3: Cross multiply
   72,648.28x = 108,943.98 × 28,269.16
4. Step 4: Simplify right side
   72,648.28x = 3,079,754,801.66
5. Step 5: Solve for x
   x = 3,079,754,801.66/72,648.28
6. Step 6: Final answer
   x = 42,392.67