Finding the Fourth Proportional to 123,268.91, 170,111.16 and 66,680.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,268.91 : 170,111.16 = 66,680.29 : x
2. Step 2: Convert to fraction form
   123,268.91/170,111.16 = 66,680.29/x
3. Step 3: Cross multiply
   123,268.91x = 170,111.16 × 66,680.29
4. Step 4: Simplify right side
   123,268.91x = 11,343,061,481.04
5. Step 5: Solve for x
   x = 11,343,061,481.04/123,268.91
6. Step 6: Final answer
   x = 92,018.83