Finding the Fourth Proportional to 263,597.31, 363,766.01 and 142,738.61

Step by Step Solution

1. Step 1: Write the proportion equation
   263,597.31 : 363,766.01 = 142,738.61 : x
2. Step 2: Convert to fraction form
   263,597.31/363,766.01 = 142,738.61/x
3. Step 3: Cross multiply
   263,597.31x = 363,766.01 × 142,738.61
4. Step 4: Simplify right side
   263,597.31x = 51,923,452,100.12
5. Step 5: Solve for x
   x = 51,923,452,100.12/263,597.31
6. Step 6: Final answer
   x = 196,980.20