Finding the Fourth Proportional to 326,018.52, 489,108.78 and 115,677.72

Step by Step Solution

1. Step 1: Write the proportion equation
   326,018.52 : 489,108.78 = 115,677.72 : x
2. Step 2: Convert to fraction form
   326,018.52/489,108.78 = 115,677.72/x
3. Step 3: Cross multiply
   326,018.52x = 489,108.78 × 115,677.72
4. Step 4: Simplify right side
   326,018.52x = 56,578,988,502.38
5. Step 5: Solve for x
   x = 56,578,988,502.38/326,018.52
6. Step 6: Final answer
   x = 173,545.32