Finding the Fourth Proportional to 196,443.72, 271,219.45 and 153,348.88

Step by Step Solution

1. Step 1: Write the proportion equation
   196,443.72 : 271,219.45 = 153,348.88 : x
2. Step 2: Convert to fraction form
   196,443.72/271,219.45 = 153,348.88/x
3. Step 3: Cross multiply
   196,443.72x = 271,219.45 × 153,348.88
4. Step 4: Simplify right side
   196,443.72x = 41,591,198,891.72
5. Step 5: Solve for x
   x = 41,591,198,891.72/196,443.72
6. Step 6: Final answer
   x = 211,720.68