Finding the Fourth Proportional to 144,584.54, 199,539.15 and 80,921.42

Step by Step Solution

1. Step 1: Write the proportion equation
   144,584.54 : 199,539.15 = 80,921.42 : x
2. Step 2: Convert to fraction form
   144,584.54/199,539.15 = 80,921.42/x
3. Step 3: Cross multiply
   144,584.54x = 199,539.15 × 80,921.42
4. Step 4: Simplify right side
   144,584.54x = 16,146,991,363.59
5. Step 5: Solve for x
   x = 16,146,991,363.59/144,584.54
6. Step 6: Final answer
   x = 111,678.55