Finding the Fourth Proportional to 198,923.50, 274,514.43 and 109,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,923.50 : 274,514.43 = 109,499.50 : x
2. Step 2: Convert to fraction form
   198,923.50/274,514.43 = 109,499.50/x
3. Step 3: Cross multiply
   198,923.50x = 274,514.43 × 109,499.50
4. Step 4: Simplify right side
   198,923.50x = 30,059,192,827.79
5. Step 5: Solve for x
   x = 30,059,192,827.79/198,923.50
6. Step 6: Final answer
   x = 151,109.31