Finding the Fourth Proportional to 199,067.50, 274,713.15 and 109,643.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,067.50 : 274,713.15 = 109,643.50 : x
2. Step 2: Convert to fraction form
   199,067.50/274,713.15 = 109,643.50/x
3. Step 3: Cross multiply
   199,067.50x = 274,713.15 × 109,643.50
4. Step 4: Simplify right side
   199,067.50x = 30,120,511,262.03
5. Step 5: Solve for x
   x = 30,120,511,262.03/199,067.50
6. Step 6: Final answer
   x = 151,308.03