Finding the Fourth Proportional to 72,440.16, 99,966.16 and 40,174.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,440.16 : 99,966.16 = 40,174.56 : x
2. Step 2: Convert to fraction form
   72,440.16/99,966.16 = 40,174.56/x
3. Step 3: Cross multiply
   72,440.16x = 99,966.16 × 40,174.56
4. Step 4: Simplify right side
   72,440.16x = 4,016,096,492.89
5. Step 5: Solve for x
   x = 4,016,096,492.89/72,440.16
6. Step 6: Final answer
   x = 55,440.19