Finding the Fourth Proportional to 36,128.42, 49,856.34 and 20,214.38

Step by Step Solution

1. Step 1: Write the proportion equation
   36,128.42 : 49,856.34 = 20,214.38 : x
2. Step 2: Convert to fraction form
   36,128.42/49,856.34 = 20,214.38/x
3. Step 3: Cross multiply
   36,128.42x = 49,856.34 × 20,214.38
4. Step 4: Simplify right side
   36,128.42x = 1,007,815,002.17
5. Step 5: Solve for x
   x = 1,007,815,002.17/36,128.42
6. Step 6: Final answer
   x = 27,895.35