Finding the Fourth Proportional to 449,468.56, 620,268.72 and 245,522.30

Step by Step Solution

1. Step 1: Write the proportion equation
   449,468.56 : 620,268.72 = 245,522.30 : x
2. Step 2: Convert to fraction form
   449,468.56/620,268.72 = 245,522.30/x
3. Step 3: Cross multiply
   449,468.56x = 620,268.72 × 245,522.30
4. Step 4: Simplify right side
   449,468.56x = 152,289,802,752.46
5. Step 5: Solve for x
   x = 152,289,802,752.46/449,468.56
6. Step 6: Final answer
   x = 338,821.93