Finding the Fourth Proportional to 199,172.72, 274,857 and 109,748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   199,172.72 : 274,857 = 109,748.72 : x
2. Step 2: Convert to fraction form
   199,172.72/274,857 = 109,748.72/x
3. Step 3: Cross multiply
   199,172.72x = 274,857 × 109,748.72
4. Step 4: Simplify right side
   199,172.72x = 30,165,203,933.04
5. Step 5: Solve for x
   x = 30,165,203,933.04/199,172.72
6. Step 6: Final answer
   x = 151,452.49