Finding the Fourth Proportional to 49,650.72, 68,438 and 40,682.40

Step by Step Solution

1. Step 1: Write the proportion equation
   49,650.72 : 68,438 = 40,682.40 : x
2. Step 2: Convert to fraction form
   49,650.72/68,438 = 40,682.40/x
3. Step 3: Cross multiply
   49,650.72x = 68,438 × 40,682.40
4. Step 4: Simplify right side
   49,650.72x = 2,784,222,091.20
5. Step 5: Solve for x
   x = 2,784,222,091.20/49,650.72
6. Step 6: Final answer
   x = 56,076.17