Finding the Fourth Proportional to 72,446.74, 99,981.30 and 40,617.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,446.74 : 99,981.30 = 40,617.70 : x
2. Step 2: Convert to fraction form
   72,446.74/99,981.30 = 40,617.70/x
3. Step 3: Cross multiply
   72,446.74x = 99,981.30 × 40,617.70
4. Step 4: Simplify right side
   72,446.74x = 4,061,010,449.01
5. Step 5: Solve for x
   x = 4,061,010,449.01/72,446.74
6. Step 6: Final answer
   x = 56,055.12