Finding the Fourth Proportional to 429,940.49, 593,313.59 and 238,949.78

Step by Step Solution

1. Step 1: Write the proportion equation
   429,940.49 : 593,313.59 = 238,949.78 : x
2. Step 2: Convert to fraction form
   429,940.49/593,313.59 = 238,949.78/x
3. Step 3: Cross multiply
   429,940.49x = 593,313.59 × 238,949.78
4. Step 4: Simplify right side
   429,940.49x = 141,772,149,432.32
5. Step 5: Solve for x
   x = 141,772,149,432.32/429,940.49
6. Step 6: Final answer
   x = 329,748.31