Finding the Fourth Proportional to 205,616.10, 308,136.15 and 163,568.10

Step by Step Solution

1. Step 1: Write the proportion equation
   205,616.10 : 308,136.15 = 163,568.10 : x
2. Step 2: Convert to fraction form
   205,616.10/308,136.15 = 163,568.10/x
3. Step 3: Cross multiply
   205,616.10x = 308,136.15 × 163,568.10
4. Step 4: Simplify right side
   205,616.10x = 50,401,244,596.82
5. Step 5: Solve for x
   x = 50,401,244,596.82/205,616.10
6. Step 6: Final answer
   x = 245,123.05