Finding the Fourth Proportional to 269,892.88, 405,086.27 and 136,864.96

Step by Step Solution

1. Step 1: Write the proportion equation
   269,892.88 : 405,086.27 = 136,864.96 : x
2. Step 2: Convert to fraction form
   269,892.88/405,086.27 = 136,864.96/x
3. Step 3: Cross multiply
   269,892.88x = 405,086.27 × 136,864.96
4. Step 4: Simplify right side
   269,892.88x = 55,442,114,443.06
5. Step 5: Solve for x
   x = 55,442,114,443.06/269,892.88
6. Step 6: Final answer
   x = 205,422.67