Finding the Fourth Proportional to 123,681, 170,680.20 and 67,092.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,681 : 170,680.20 = 67,092.78 : x
2. Step 2: Convert to fraction form
   123,681/170,680.20 = 67,092.78/x
3. Step 3: Cross multiply
   123,681x = 170,680.20 × 67,092.78
4. Step 4: Simplify right side
   123,681x = 11,451,409,108.96
5. Step 5: Solve for x
   x = 11,451,409,108.96/123,681
6. Step 6: Final answer
   x = 92,588.26