Finding the Fourth Proportional to 71,942.78, 99,281.03 and 40,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   71,942.78 : 99,281.03 = 40,111.68 : x
2. Step 2: Convert to fraction form
   71,942.78/99,281.03 = 40,111.68/x
3. Step 3: Cross multiply
   71,942.78x = 99,281.03 × 40,111.68
4. Step 4: Simplify right side
   71,942.78x = 3,982,329,005.71
5. Step 5: Solve for x
   x = 3,982,329,005.71/71,942.78
6. Step 6: Final answer
   x = 55,354.12