Finding the Fourth Proportional to 259,498.52, 389,109.30 and 133,087.46

Step by Step Solution

1. Step 1: Write the proportion equation
   259,498.52 : 389,109.30 = 133,087.46 : x
2. Step 2: Convert to fraction form
   259,498.52/389,109.30 = 133,087.46/x
3. Step 3: Cross multiply
   259,498.52x = 389,109.30 × 133,087.46
4. Step 4: Simplify right side
   259,498.52x = 51,785,568,399.38
5. Step 5: Solve for x
   x = 51,785,568,399.38/259,498.52
6. Step 6: Final answer
   x = 199,560.17