Finding the Fourth Proportional to 105,251.96, 145,242.42 and 57,496.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,251.96 : 145,242.42 = 57,496.52 : x
2. Step 2: Convert to fraction form
   105,251.96/145,242.42 = 57,496.52/x
3. Step 3: Cross multiply
   105,251.96x = 145,242.42 × 57,496.52
4. Step 4: Simplify right side
   105,251.96x = 8,350,933,706.38
5. Step 5: Solve for x
   x = 8,350,933,706.38/105,251.96
6. Step 6: Final answer
   x = 79,342.31