Finding the Fourth Proportional to 359,105.40, 495,767.79 and 238,411.55

Step by Step Solution

1. Step 1: Write the proportion equation
   359,105.40 : 495,767.79 = 238,411.55 : x
2. Step 2: Convert to fraction form
   359,105.40/495,767.79 = 238,411.55/x
3. Step 3: Cross multiply
   359,105.40x = 495,767.79 × 238,411.55
4. Step 4: Simplify right side
   359,105.40x = 118,196,768,493.39
5. Step 5: Solve for x
   x = 118,196,768,493.39/359,105.40
6. Step 6: Final answer
   x = 329,142.28