Finding the Fourth Proportional to 449,238.98, 619,962.56 and 245,302.83

Step by Step Solution

1. Step 1: Write the proportion equation
   449,238.98 : 619,962.56 = 245,302.83 : x
2. Step 2: Convert to fraction form
   449,238.98/619,962.56 = 245,302.83/x
3. Step 3: Cross multiply
   449,238.98x = 619,962.56 × 245,302.83
4. Step 4: Simplify right side
   449,238.98x = 152,078,567,830.56
5. Step 5: Solve for x
   x = 152,078,567,830.56/449,238.98
6. Step 6: Final answer
   x = 338,524.87