Finding the Fourth Proportional to 198,880, 274,458.72 and 109,456

Step by Step Solution

1. Step 1: Write the proportion equation
   198,880 : 274,458.72 = 109,456 : x
2. Step 2: Convert to fraction form
   198,880/274,458.72 = 109,456/x
3. Step 3: Cross multiply
   198,880x = 274,458.72 × 109,456
4. Step 4: Simplify right side
   198,880x = 30,041,153,656.32
5. Step 5: Solve for x
   x = 30,041,153,656.32/198,880
6. Step 6: Final answer
   x = 151,051.66