Finding the Fourth Proportional to 144,478.56, 199,388.16 and 80,812.56

Step by Step Solution

1. Step 1: Write the proportion equation
   144,478.56 : 199,388.16 = 80,812.56 : x
2. Step 2: Convert to fraction form
   144,478.56/199,388.16 = 80,812.56/x
3. Step 3: Cross multiply
   144,478.56x = 199,388.16 × 80,812.56
4. Step 4: Simplify right side
   144,478.56x = 16,113,067,643.29
5. Step 5: Solve for x
   x = 16,113,067,643.29/144,478.56
6. Step 6: Final answer
   x = 111,525.67