Finding the Fourth Proportional to 263,761.83, 363,990.82 and 142,906.12

Step by Step Solution

1. Step 1: Write the proportion equation
   263,761.83 : 363,990.82 = 142,906.12 : x
2. Step 2: Convert to fraction form
   263,761.83/363,990.82 = 142,906.12/x
3. Step 3: Cross multiply
   263,761.83x = 363,990.82 × 142,906.12
4. Step 4: Simplify right side
   263,761.83x = 52,016,515,801.82
5. Step 5: Solve for x
   x = 52,016,515,801.82/263,761.83
6. Step 6: Final answer
   x = 197,210.17