Finding the Fourth Proportional to 259,789.32, 389,887.83 and 133,424.46

Step by Step Solution

1. Step 1: Write the proportion equation
   259,789.32 : 389,887.83 = 133,424.46 : x
2. Step 2: Convert to fraction form
   259,789.32/389,887.83 = 133,424.46/x
3. Step 3: Cross multiply
   259,789.32x = 389,887.83 × 133,424.46
4. Step 4: Simplify right side
   259,789.32x = 52,020,573,178.32
5. Step 5: Solve for x
   x = 52,020,573,178.32/259,789.32
6. Step 6: Final answer
   x = 200,241.38