Finding the Fourth Proportional to 105,012.24, 144,913.72 and 57,266.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,012.24 : 144,913.72 = 57,266.52 : x
2. Step 2: Convert to fraction form
   105,012.24/144,913.72 = 57,266.52/x
3. Step 3: Cross multiply
   105,012.24x = 144,913.72 × 57,266.52
4. Step 4: Simplify right side
   105,012.24x = 8,298,704,444.65
5. Step 5: Solve for x
   x = 8,298,704,444.65/105,012.24
6. Step 6: Final answer
   x = 79,026.07