Finding the Fourth Proportional to 492,108, 679,111.38 and 277,251.42

Step by Step Solution

1. Step 1: Write the proportion equation
   492,108 : 679,111.38 = 277,251.42 : x
2. Step 2: Convert to fraction form
   492,108/679,111.38 = 277,251.42/x
3. Step 3: Cross multiply
   492,108x = 679,111.38 × 277,251.42
4. Step 4: Simplify right side
   492,108x = 188,284,594,443.16
5. Step 5: Solve for x
   x = 188,284,594,443.16/492,108
6. Step 6: Final answer
   x = 382,608.28