Finding the Fourth Proportional to 263,709.39, 363,920.72 and 142,850.69

Step by Step Solution

1. Step 1: Write the proportion equation
   263,709.39 : 363,920.72 = 142,850.69 : x
2. Step 2: Convert to fraction form
   263,709.39/363,920.72 = 142,850.69/x
3. Step 3: Cross multiply
   263,709.39x = 363,920.72 × 142,850.69
4. Step 4: Simplify right side
   263,709.39x = 51,986,325,323.83
5. Step 5: Solve for x
   x = 51,986,325,323.83/263,709.39
6. Step 6: Final answer
   x = 197,134.90