Finding the Fourth Proportional to 49,844.72, 74,745.20 and 18,658.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49,844.72 : 74,745.20 = 18,658.10 : x
2. Step 2: Convert to fraction form
   49,844.72/74,745.20 = 18,658.10/x
3. Step 3: Cross multiply
   49,844.72x = 74,745.20 × 18,658.10
4. Step 4: Simplify right side
   49,844.72x = 1,394,603,042.39
5. Step 5: Solve for x
   x = 1,394,603,042.39/49,844.72
6. Step 6: Final answer
   x = 27,978.96