Finding the Fourth Proportional to 401,560.89, 554,061.11 and 240,354.69

Step by Step Solution

1. Step 1: Write the proportion equation
   401,560.89 : 554,061.11 = 240,354.69 : x
2. Step 2: Convert to fraction form
   401,560.89/554,061.11 = 240,354.69/x
3. Step 3: Cross multiply
   401,560.89x = 554,061.11 × 240,354.69
4. Step 4: Simplify right side
   401,560.89x = 133,171,185,133.33
5. Step 5: Solve for x
   x = 133,171,185,133.33/401,560.89
6. Step 6: Final answer
   x = 331,633.85