Finding the Fourth Proportional to 104,662.72, 144,356.34 and 80,459.92

Step by Step Solution

1. Step 1: Write the proportion equation
   104,662.72 : 144,356.34 = 80,459.92 : x
2. Step 2: Convert to fraction form
   104,662.72/144,356.34 = 80,459.92/x
3. Step 3: Cross multiply
   104,662.72x = 144,356.34 × 80,459.92
4. Step 4: Simplify right side
   104,662.72x = 11,614,899,567.89
5. Step 5: Solve for x
   x = 11,614,899,567.89/104,662.72
6. Step 6: Final answer
   x = 110,974.56