Finding the Fourth Proportional to 51,890.27, 71,610.32 and 30,687.71

Step by Step Solution

1. Step 1: Write the proportion equation
   51,890.27 : 71,610.32 = 30,687.71 : x
2. Step 2: Convert to fraction form
   51,890.27/71,610.32 = 30,687.71/x
3. Step 3: Cross multiply
   51,890.27x = 71,610.32 × 30,687.71
4. Step 4: Simplify right side
   51,890.27x = 2,197,556,451.83
5. Step 5: Solve for x
   x = 2,197,556,451.83/51,890.27
6. Step 6: Final answer
   x = 42,350.07