Finding the Fourth Proportional to 123,699.42, 170,705.22 and 67,110.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,699.42 : 170,705.22 = 67,110.78 : x
2. Step 2: Convert to fraction form
   123,699.42/170,705.22 = 67,110.78/x
3. Step 3: Cross multiply
   123,699.42x = 170,705.22 × 67,110.78
4. Step 4: Simplify right side
   123,699.42x = 11,456,160,464.27
5. Step 5: Solve for x
   x = 11,456,160,464.27/123,699.42
6. Step 6: Final answer
   x = 92,612.89