Finding the Fourth Proportional to 123,609.72, 170,579.88 and 67,020.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123,609.72 : 170,579.88 = 67,020.96 : x
2. Step 2: Convert to fraction form
   123,609.72/170,579.88 = 67,020.96/x
3. Step 3: Cross multiply
   123,609.72x = 170,579.88 × 67,020.96
4. Step 4: Simplify right side
   123,609.72x = 11,432,427,314.28
5. Step 5: Solve for x
   x = 11,432,427,314.28/123,609.72
6. Step 6: Final answer
   x = 92,488.09