Finding the Fourth Proportional to 168.30, 253.69 and 168.30

Step by Step Solution

1. Step 1: Write the proportion equation
   168.30 : 253.69 = 168.30 : x
2. Step 2: Convert to fraction form
   168.30/253.69 = 168.30/x
3. Step 3: Cross multiply
   168.30x = 253.69 × 168.30
4. Step 4: Simplify right side
   168.30x = 42,695.61
5. Step 5: Solve for x
   x = 42,695.61/168.30
6. Step 6: Final answer
   x = 253.69