Finding the Fourth Proportional to 381,662.72, 572,756.49 and 132,344.72

Step by Step Solution

1. Step 1: Write the proportion equation
   381,662.72 : 572,756.49 = 132,344.72 : x
2. Step 2: Convert to fraction form
   381,662.72/572,756.49 = 132,344.72/x
3. Step 3: Cross multiply
   381,662.72x = 572,756.49 × 132,344.72
4. Step 4: Simplify right side
   381,662.72x = 75,801,297,297.23
5. Step 5: Solve for x
   x = 75,801,297,297.23/381,662.72
6. Step 6: Final answer
   x = 198,608.07