Finding the Fourth Proportional to 439,961.38, 607,146.72 and 238,757.38

Step by Step Solution

1. Step 1: Write the proportion equation
   439,961.38 : 607,146.72 = 238,757.38 : x
2. Step 2: Convert to fraction form
   439,961.38/607,146.72 = 238,757.38/x
3. Step 3: Cross multiply
   439,961.38x = 607,146.72 × 238,757.38
4. Step 4: Simplify right side
   439,961.38x = 144,960,760,142.79
5. Step 5: Solve for x
   x = 144,960,760,142.79/439,961.38
6. Step 6: Final answer
   x = 329,485.19