Finding the Fourth Proportional to 105,010.24, 144,909.76 and 57,262.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,010.24 : 144,909.76 = 57,262.72 : x
2. Step 2: Convert to fraction form
   105,010.24/144,909.76 = 57,262.72/x
3. Step 3: Cross multiply
   105,010.24x = 144,909.76 × 57,262.72
4. Step 4: Simplify right side
   105,010.24x = 8,297,927,012.15
5. Step 5: Solve for x
   x = 8,297,927,012.15/105,010.24
6. Step 6: Final answer
   x = 79,020.17