Finding the Fourth Proportional to 449,251.89, 619,964.46 and 245,302.69

Step by Step Solution

1. Step 1: Write the proportion equation
   449,251.89 : 619,964.46 = 245,302.69 : x
2. Step 2: Convert to fraction form
   449,251.89/619,964.46 = 245,302.69/x
3. Step 3: Cross multiply
   449,251.89x = 619,964.46 × 245,302.69
4. Step 4: Simplify right side
   449,251.89x = 152,078,949,742.40
5. Step 5: Solve for x
   x = 152,078,949,742.40/449,251.89
6. Step 6: Final answer
   x = 338,515.99