Finding the Fourth Proportional to 72,073.15, 99,461.13 and 40,243.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,073.15 : 99,461.13 = 40,243.18 : x
2. Step 2: Convert to fraction form
   72,073.15/99,461.13 = 40,243.18/x
3. Step 3: Cross multiply
   72,073.15x = 99,461.13 × 40,243.18
4. Step 4: Simplify right side
   72,073.15x = 4,002,632,157.59
5. Step 5: Solve for x
   x = 4,002,632,157.59/72,073.15
6. Step 6: Final answer
   x = 55,535.69