Finding the Fourth Proportional to 144,636.56, 199,605.96 and 80,970.56

Step by Step Solution

1. Step 1: Write the proportion equation
   144,636.56 : 199,605.96 = 80,970.56 : x
2. Step 2: Convert to fraction form
   144,636.56/199,605.96 = 80,970.56/x
3. Step 3: Cross multiply
   144,636.56x = 199,605.96 × 80,970.56
4. Step 4: Simplify right side
   144,636.56x = 16,162,206,360.54
5. Step 5: Solve for x
   x = 16,162,206,360.54/144,636.56
6. Step 6: Final answer
   x = 111,743.58