Finding the Fourth Proportional to 221,196.72, 331,620.12 and 158,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   221,196.72 : 331,620.12 = 158,016.72 : x
2. Step 2: Convert to fraction form
   221,196.72/331,620.12 = 158,016.72/x
3. Step 3: Cross multiply
   221,196.72x = 331,620.12 × 158,016.72
4. Step 4: Simplify right side
   221,196.72x = 52,401,523,648.41
5. Step 5: Solve for x
   x = 52,401,523,648.41/221,196.72
6. Step 6: Final answer
   x = 236,900.09