Finding the Fourth Proportional to 49,086.78, 73,629.36 and 12,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,086.78 : 73,629.36 = 12,150.78 : x
2. Step 2: Convert to fraction form
   49,086.78/73,629.36 = 12,150.78/x
3. Step 3: Cross multiply
   49,086.78x = 73,629.36 × 12,150.78
4. Step 4: Simplify right side
   49,086.78x = 894,654,154.90
5. Step 5: Solve for x
   x = 894,654,154.90/49,086.78
6. Step 6: Final answer
   x = 18,225.97