Finding the Fourth Proportional to 72,022.08, 99,395.46 and 40,197.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,022.08 : 99,395.46 = 40,197.18 : x
2. Step 2: Convert to fraction form
   72,022.08/99,395.46 = 40,197.18/x
3. Step 3: Cross multiply
   72,022.08x = 99,395.46 × 40,197.18
4. Step 4: Simplify right side
   72,022.08x = 3,995,417,196.80
5. Step 5: Solve for x
   x = 3,995,417,196.80/72,022.08
6. Step 6: Final answer
   x = 55,474.89