Finding the Fourth Proportional to 105,008.48, 144,908.52 and 57,262.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,008.48 : 144,908.52 = 57,262.76 : x
2. Step 2: Convert to fraction form
   105,008.48/144,908.52 = 57,262.76/x
3. Step 3: Cross multiply
   105,008.48x = 144,908.52 × 57,262.76
4. Step 4: Simplify right side
   105,008.48x = 8,297,861,802.72
5. Step 5: Solve for x
   x = 8,297,861,802.72/105,008.48
6. Step 6: Final answer
   x = 79,020.87