Finding the Fourth Proportional to 72,033.57, 99,402.28 and 40,204.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,033.57 : 99,402.28 = 40,204.52 : x
2. Step 2: Convert to fraction form
   72,033.57/99,402.28 = 40,204.52/x
3. Step 3: Cross multiply
   72,033.57x = 99,402.28 × 40,204.52
4. Step 4: Simplify right side
   72,033.57x = 3,996,420,954.31
5. Step 5: Solve for x
   x = 3,996,420,954.31/72,033.57
6. Step 6: Final answer
   x = 55,479.98