Finding the Fourth Proportional to 144,863.53, 217,357.72 and 78,350.49

Step by Step Solution

1. Step 1: Write the proportion equation
   144,863.53 : 217,357.72 = 78,350.49 : x
2. Step 2: Convert to fraction form
   144,863.53/217,357.72 = 78,350.49/x
3. Step 3: Cross multiply
   144,863.53x = 217,357.72 × 78,350.49
4. Step 4: Simplify right side
   144,863.53x = 17,030,083,671.41
5. Step 5: Solve for x
   x = 17,030,083,671.41/144,863.53
6. Step 6: Final answer
   x = 117,559.50