Finding the Fourth Proportional to 144,683.06, 217,086.82 and 78,109.97

Step by Step Solution

1. Step 1: Write the proportion equation
   144,683.06 : 217,086.82 = 78,109.97 : x
2. Step 2: Convert to fraction form
   144,683.06/217,086.82 = 78,109.97/x
3. Step 3: Cross multiply
   144,683.06x = 217,086.82 × 78,109.97
4. Step 4: Simplify right side
   144,683.06x = 16,956,643,716.89
5. Step 5: Solve for x
   x = 16,956,643,716.89/144,683.06
6. Step 6: Final answer
   x = 117,198.55