Finding the Fourth Proportional to 71,903.46, 99,227.94 and 40,072.29

Step by Step Solution

1. Step 1: Write the proportion equation
   71,903.46 : 99,227.94 = 40,072.29 : x
2. Step 2: Convert to fraction form
   71,903.46/99,227.94 = 40,072.29/x
3. Step 3: Cross multiply
   71,903.46x = 99,227.94 × 40,072.29
4. Step 4: Simplify right side
   71,903.46x = 3,976,290,787.78
5. Step 5: Solve for x
   x = 3,976,290,787.78/71,903.46
6. Step 6: Final answer
   x = 55,300.41