Finding the Fourth Proportional to 71,141.72, 106,743.54 and 33,728

Step by Step Solution

1. Step 1: Write the proportion equation
   71,141.72 : 106,743.54 = 33,728 : x
2. Step 2: Convert to fraction form
   71,141.72/106,743.54 = 33,728/x
3. Step 3: Cross multiply
   71,141.72x = 106,743.54 × 33,728
4. Step 4: Simplify right side
   71,141.72x = 3,600,246,117.12
5. Step 5: Solve for x
   x = 3,600,246,117.12/71,141.72
6. Step 6: Final answer
   x = 50,606.68