Finding the Fourth Proportional to 105,182.10, 145,145.88 and 57,426.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,182.10 : 145,145.88 = 57,426.24 : x
2. Step 2: Convert to fraction form
   105,182.10/145,145.88 = 57,426.24/x
3. Step 3: Cross multiply
   105,182.10x = 145,145.88 × 57,426.24
4. Step 4: Simplify right side
   105,182.10x = 8,335,182,139.89
5. Step 5: Solve for x
   x = 8,335,182,139.89/105,182.10
6. Step 6: Final answer
   x = 79,245.25