Finding the Fourth Proportional to 122,640.89, 169,308.43 and 82,565.93

Step by Step Solution

1. Step 1: Write the proportion equation
   122,640.89 : 169,308.43 = 82,565.93 : x
2. Step 2: Convert to fraction form
   122,640.89/169,308.43 = 82,565.93/x
3. Step 3: Cross multiply
   122,640.89x = 169,308.43 × 82,565.93
4. Step 4: Simplify right side
   122,640.89x = 13,979,108,196.65
5. Step 5: Solve for x
   x = 13,979,108,196.65/122,640.89
6. Step 6: Final answer
   x = 113,984.08