Finding the Fourth Proportional to 72,443.79, 99,974.52 and 40,613.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,443.79 : 99,974.52 = 40,613.22 : x
2. Step 2: Convert to fraction form
   72,443.79/99,974.52 = 40,613.22/x
3. Step 3: Cross multiply
   72,443.79x = 99,974.52 × 40,613.22
4. Step 4: Simplify right side
   72,443.79x = 4,060,287,175.15
5. Step 5: Solve for x
   x = 4,060,287,175.15/72,443.79
6. Step 6: Final answer
   x = 56,047.42