Finding the Fourth Proportional to 142,391.27, 213,919.07 and 83,268.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,391.27 : 213,919.07 = 83,268.56 : x
2. Step 2: Convert to fraction form
   142,391.27/213,919.07 = 83,268.56/x
3. Step 3: Cross multiply
   142,391.27x = 213,919.07 × 83,268.56
4. Step 4: Simplify right side
   142,391.27x = 17,812,731,429.50
5. Step 5: Solve for x
   x = 17,812,731,429.50/142,391.27
6. Step 6: Final answer
   x = 125,097.08