Finding the Fourth Proportional to 71,142.72, 106,745.04 and 33,729

Step by Step Solution

1. Step 1: Write the proportion equation
   71,142.72 : 106,745.04 = 33,729 : x
2. Step 2: Convert to fraction form
   71,142.72/106,745.04 = 33,729/x
3. Step 3: Cross multiply
   71,142.72x = 106,745.04 × 33,729
4. Step 4: Simplify right side
   71,142.72x = 3,600,403,454.16
5. Step 5: Solve for x
   x = 3,600,403,454.16/71,142.72
6. Step 6: Final answer
   x = 50,608.18