Finding the Fourth Proportional to 36,142.34, 49,869.87 and 20,826.50

Step by Step Solution

1. Step 1: Write the proportion equation
   36,142.34 : 49,869.87 = 20,826.50 : x
2. Step 2: Convert to fraction form
   36,142.34/49,869.87 = 20,826.50/x
3. Step 3: Cross multiply
   36,142.34x = 49,869.87 × 20,826.50
4. Step 4: Simplify right side
   36,142.34x = 1,038,614,847.56
5. Step 5: Solve for x
   x = 1,038,614,847.56/36,142.34
6. Step 6: Final answer
   x = 28,736.79