Finding the Fourth Proportional to 658,062.54, 987,458.58 and 321,105.98

Step by Step Solution

1. Step 1: Write the proportion equation
   658,062.54 : 987,458.58 = 321,105.98 : x
2. Step 2: Convert to fraction form
   658,062.54/987,458.58 = 321,105.98/x
3. Step 3: Cross multiply
   658,062.54x = 987,458.58 × 321,105.98
4. Step 4: Simplify right side
   658,062.54x = 317,078,855,040.31
5. Step 5: Solve for x
   x = 317,078,855,040.31/658,062.54
6. Step 6: Final answer
   x = 481,836.96