Finding the Fourth Proportional to 198,667.50, 274,161.15 and 109,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,667.50 : 274,161.15 = 109,243.50 : x
2. Step 2: Convert to fraction form
   198,667.50/274,161.15 = 109,243.50/x
3. Step 3: Cross multiply
   198,667.50x = 274,161.15 × 109,243.50
4. Step 4: Simplify right side
   198,667.50x = 29,950,323,590.03
5. Step 5: Solve for x
   x = 29,950,323,590.03/198,667.50
6. Step 6: Final answer
   x = 150,756.03