Finding the Fourth Proportional to 104,908.56, 144,771.99 and 57,162.30

Step by Step Solution

1. Step 1: Write the proportion equation
   104,908.56 : 144,771.99 = 57,162.30 : x
2. Step 2: Convert to fraction form
   104,908.56/144,771.99 = 57,162.30/x
3. Step 3: Cross multiply
   104,908.56x = 144,771.99 × 57,162.30
4. Step 4: Simplify right side
   104,908.56x = 8,275,499,923.98
5. Step 5: Solve for x
   x = 8,275,499,923.98/104,908.56
6. Step 6: Final answer
   x = 78,882.98