Finding the Fourth Proportional to 72,072.56, 99,470.10 and 40,243.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,072.56 : 99,470.10 = 40,243.52 : x
2. Step 2: Convert to fraction form
   72,072.56/99,470.10 = 40,243.52/x
3. Step 3: Cross multiply
   72,072.56x = 99,470.10 × 40,243.52
4. Step 4: Simplify right side
   72,072.56x = 4,003,026,958.75
5. Step 5: Solve for x
   x = 4,003,026,958.75/72,072.56
6. Step 6: Final answer
   x = 55,541.62