Finding the Fourth Proportional to 144,469.78, 199,369.56 and 80,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,469.78 : 199,369.56 = 80,813.50 : x
2. Step 2: Convert to fraction form
   144,469.78/199,369.56 = 80,813.50/x
3. Step 3: Cross multiply
   144,469.78x = 199,369.56 × 80,813.50
4. Step 4: Simplify right side
   144,469.78x = 16,111,751,937.06
5. Step 5: Solve for x
   x = 16,111,751,937.06/144,469.78
6. Step 6: Final answer
   x = 111,523.34