Finding the Fourth Proportional to 107,879.78, 161,671.89 and 68,464.55

Step by Step Solution

1. Step 1: Write the proportion equation
   107,879.78 : 161,671.89 = 68,464.55 : x
2. Step 2: Convert to fraction form
   107,879.78/161,671.89 = 68,464.55/x
3. Step 3: Cross multiply
   107,879.78x = 161,671.89 × 68,464.55
4. Step 4: Simplify right side
   107,879.78x = 11,068,793,196.50
5. Step 5: Solve for x
   x = 11,068,793,196.50/107,879.78
6. Step 6: Final answer
   x = 102,603.04