Finding the Fourth Proportional to 399,401.34, 598,752.08 and 150,258.30

Step by Step Solution

1. Step 1: Write the proportion equation
   399,401.34 : 598,752.08 = 150,258.30 : x
2. Step 2: Convert to fraction form
   399,401.34/598,752.08 = 150,258.30/x
3. Step 3: Cross multiply
   399,401.34x = 598,752.08 × 150,258.30
4. Step 4: Simplify right side
   399,401.34x = 89,967,469,662.26
5. Step 5: Solve for x
   x = 89,967,469,662.26/399,401.34
6. Step 6: Final answer
   x = 225,255.80