Finding the Fourth Proportional to 144,800.78, 199,824.81 and 88,212.16

Step by Step Solution

1. Step 1: Write the proportion equation
   144,800.78 : 199,824.81 = 88,212.16 : x
2. Step 2: Convert to fraction form
   144,800.78/199,824.81 = 88,212.16/x
3. Step 3: Cross multiply
   144,800.78x = 199,824.81 × 88,212.16
4. Step 4: Simplify right side
   144,800.78x = 17,626,978,111.69
5. Step 5: Solve for x
   x = 17,626,978,111.69/144,800.78
6. Step 6: Final answer
   x = 121,732.62