Finding the Fourth Proportional to 72,949.59, 109,424.27 and 28,545.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,949.59 : 109,424.27 = 28,545.18 : x
2. Step 2: Convert to fraction form
   72,949.59/109,424.27 = 28,545.18/x
3. Step 3: Cross multiply
   72,949.59x = 109,424.27 × 28,545.18
4. Step 4: Simplify right side
   72,949.59x = 3,123,535,483.52
5. Step 5: Solve for x
   x = 3,123,535,483.52/72,949.59
6. Step 6: Final answer
   x = 42,817.73