Finding the Fourth Proportional to 123,250.96, 170,085.72 and 66,662.20

Step by Step Solution

1. Step 1: Write the proportion equation
   123,250.96 : 170,085.72 = 66,662.20 : x
2. Step 2: Convert to fraction form
   123,250.96/170,085.72 = 66,662.20/x
3. Step 3: Cross multiply
   123,250.96x = 170,085.72 × 66,662.20
4. Step 4: Simplify right side
   123,250.96x = 11,338,288,283.78
5. Step 5: Solve for x
   x = 11,338,288,283.78/123,250.96
6. Step 6: Final answer
   x = 91,993.51