Finding the Fourth Proportional to 144,650.52, 199,618.02 and 80,991

Step by Step Solution

1. Step 1: Write the proportion equation
   144,650.52 : 199,618.02 = 80,991 : x
2. Step 2: Convert to fraction form
   144,650.52/199,618.02 = 80,991/x
3. Step 3: Cross multiply
   144,650.52x = 199,618.02 × 80,991
4. Step 4: Simplify right side
   144,650.52x = 16,167,263,057.82
5. Step 5: Solve for x
   x = 16,167,263,057.82/144,650.52
6. Step 6: Final answer
   x = 111,767.75