Finding the Fourth Proportional to 144,143.94, 214,736.05 and 137,667.08

Step by Step Solution

1. Step 1: Write the proportion equation
   144,143.94 : 214,736.05 = 137,667.08 : x
2. Step 2: Convert to fraction form
   144,143.94/214,736.05 = 137,667.08/x
3. Step 3: Cross multiply
   144,143.94x = 214,736.05 × 137,667.08
4. Step 4: Simplify right side
   144,143.94x = 29,562,083,700.89
5. Step 5: Solve for x
   x = 29,562,083,700.89/144,143.94
6. Step 6: Final answer
   x = 205,087.25