Finding the Fourth Proportional to 439,105.62, 605,950.32 and 248,114.91

Step by Step Solution

1. Step 1: Write the proportion equation
   439,105.62 : 605,950.32 = 248,114.91 : x
2. Step 2: Convert to fraction form
   439,105.62/605,950.32 = 248,114.91/x
3. Step 3: Cross multiply
   439,105.62x = 605,950.32 × 248,114.91
4. Step 4: Simplify right side
   439,105.62x = 150,345,309,111.27
5. Step 5: Solve for x
   x = 150,345,309,111.27/439,105.62
6. Step 6: Final answer
   x = 342,389.85