Finding the Fourth Proportional to 449,314.47, 620,064.42 and 245,366.79

Step by Step Solution

1. Step 1: Write the proportion equation
   449,314.47 : 620,064.42 = 245,366.79 : x
2. Step 2: Convert to fraction form
   449,314.47/620,064.42 = 245,366.79/x
3. Step 3: Cross multiply
   449,314.47x = 620,064.42 × 245,366.79
4. Step 4: Simplify right side
   449,314.47x = 152,143,216,328.61
5. Step 5: Solve for x
   x = 152,143,216,328.61/449,314.47
6. Step 6: Final answer
   x = 338,611.88