Finding the Fourth Proportional to 262,196.64, 361,728.72 and 161,419.68

Step by Step Solution

1. Step 1: Write the proportion equation
   262,196.64 : 361,728.72 = 161,419.68 : x
2. Step 2: Convert to fraction form
   262,196.64/361,728.72 = 161,419.68/x
3. Step 3: Cross multiply
   262,196.64x = 361,728.72 × 161,419.68
4. Step 4: Simplify right side
   262,196.64x = 58,390,134,229.21
5. Step 5: Solve for x
   x = 58,390,134,229.21/262,196.64
6. Step 6: Final answer
   x = 222,695.97