Finding the Fourth Proportional to 199,066.50, 274,711.77 and 109,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,066.50 : 274,711.77 = 109,642.50 : x
2. Step 2: Convert to fraction form
   199,066.50/274,711.77 = 109,642.50/x
3. Step 3: Cross multiply
   199,066.50x = 274,711.77 × 109,642.50
4. Step 4: Simplify right side
   199,066.50x = 30,120,085,242.23
5. Step 5: Solve for x
   x = 30,120,085,242.23/199,066.50
6. Step 6: Final answer
   x = 151,306.65