Finding the Fourth Proportional to 449,434.93, 620,216.52 and 245,485.98

Step by Step Solution

1. Step 1: Write the proportion equation
   449,434.93 : 620,216.52 = 245,485.98 : x
2. Step 2: Convert to fraction form
   449,434.93/620,216.52 = 245,485.98/x
3. Step 3: Cross multiply
   449,434.93x = 620,216.52 × 245,485.98
4. Step 4: Simplify right side
   449,434.93x = 152,254,462,429.04
5. Step 5: Solve for x
   x = 152,254,462,429.04/449,434.93
6. Step 6: Final answer
   x = 338,768.64