Finding the Fourth Proportional to 263,648.41, 363,834.69 and 142,789.70

Step by Step Solution

1. Step 1: Write the proportion equation
   263,648.41 : 363,834.69 = 142,789.70 : x
2. Step 2: Convert to fraction form
   263,648.41/363,834.69 = 142,789.70/x
3. Step 3: Cross multiply
   263,648.41x = 363,834.69 × 142,789.70
4. Step 4: Simplify right side
   263,648.41x = 51,951,845,073.89
5. Step 5: Solve for x
   x = 51,951,845,073.89/263,648.41
6. Step 6: Final answer
   x = 197,049.72