Finding the Fourth Proportional to 33,439.40, 49,864.37 and 33,139.61

Step by Step Solution

1. Step 1: Write the proportion equation
   33,439.40 : 49,864.37 = 33,139.61 : x
2. Step 2: Convert to fraction form
   33,439.40/49,864.37 = 33,139.61/x
3. Step 3: Cross multiply
   33,439.40x = 49,864.37 × 33,139.61
4. Step 4: Simplify right side
   33,439.40x = 1,652,485,525.37
5. Step 5: Solve for x
   x = 1,652,485,525.37/33,439.40
6. Step 6: Final answer
   x = 49,417.33