Finding the Fourth Proportional to 144,734.56, 217,435.56 and 138,755.94

Step by Step Solution

1. Step 1: Write the proportion equation
   144,734.56 : 217,435.56 = 138,755.94 : x
2. Step 2: Convert to fraction form
   144,734.56/217,435.56 = 138,755.94/x
3. Step 3: Cross multiply
   144,734.56x = 217,435.56 × 138,755.94
4. Step 4: Simplify right side
   144,734.56x = 30,170,475,517.23
5. Step 5: Solve for x
   x = 30,170,475,517.23/144,734.56
6. Step 6: Final answer
   x = 208,453.84