Finding the Fourth Proportional to 50,562.28, 69,743.46 and 30,690.28

Step by Step Solution

1. Step 1: Write the proportion equation
   50,562.28 : 69,743.46 = 30,690.28 : x
2. Step 2: Convert to fraction form
   50,562.28/69,743.46 = 30,690.28/x
3. Step 3: Cross multiply
   50,562.28x = 69,743.46 × 30,690.28
4. Step 4: Simplify right side
   50,562.28x = 2,140,446,315.57
5. Step 5: Solve for x
   x = 2,140,446,315.57/50,562.28
6. Step 6: Final answer
   x = 42,332.87