Finding the Fourth Proportional to 105,185.10, 145,150.02 and 57,429.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,185.10 : 145,150.02 = 57,429.24 : x
2. Step 2: Convert to fraction form
   105,185.10/145,150.02 = 57,429.24/x
3. Step 3: Cross multiply
   105,185.10x = 145,150.02 × 57,429.24
4. Step 4: Simplify right side
   105,185.10x = 8,335,855,334.58
5. Step 5: Solve for x
   x = 8,335,855,334.58/105,185.10
6. Step 6: Final answer
   x = 79,249.39