Finding the Fourth Proportional to 105,224.96, 145,205.16 and 57,469.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,224.96 : 145,205.16 = 57,469.52 : x
2. Step 2: Convert to fraction form
   105,224.96/145,205.16 = 57,469.52/x
3. Step 3: Cross multiply
   105,224.96x = 145,205.16 × 57,469.52
4. Step 4: Simplify right side
   105,224.96x = 8,344,870,846.72
5. Step 5: Solve for x
   x = 8,344,870,846.72/105,224.96
6. Step 6: Final answer
   x = 79,305.05