Finding the Fourth Proportional to 123,727.72, 170,744.71 and 67,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,727.72 : 170,744.71 = 67,139.10 : x
2. Step 2: Convert to fraction form
   123,727.72/170,744.71 = 67,139.10/x
3. Step 3: Cross multiply
   123,727.72x = 170,744.71 × 67,139.10
4. Step 4: Simplify right side
   123,727.72x = 11,463,645,305.44
5. Step 5: Solve for x
   x = 11,463,645,305.44/123,727.72
6. Step 6: Final answer
   x = 92,652.20