Finding the Fourth Proportional to 123,864.41, 171,003.71 and 81,545.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123,864.41 : 171,003.71 = 81,545.96 : x
2. Step 2: Convert to fraction form
   123,864.41/171,003.71 = 81,545.96/x
3. Step 3: Cross multiply
   123,864.41x = 171,003.71 × 81,545.96
4. Step 4: Simplify right side
   123,864.41x = 13,944,661,695.51
5. Step 5: Solve for x
   x = 13,944,661,695.51/123,864.41
6. Step 6: Final answer
   x = 112,580.05