Finding the Fourth Proportional to 196,672.32, 271,389.60 and 111,772.80

Step by Step Solution

1. Step 1: Write the proportion equation
   196,672.32 : 271,389.60 = 111,772.80 : x
2. Step 2: Convert to fraction form
   196,672.32/271,389.60 = 111,772.80/x
3. Step 3: Cross multiply
   196,672.32x = 271,389.60 × 111,772.80
4. Step 4: Simplify right side
   196,672.32x = 30,333,975,482.88
5. Step 5: Solve for x
   x = 30,333,975,482.88/196,672.32
6. Step 6: Final answer
   x = 154,236.12