Finding the Fourth Proportional to 31,826.39, 43,580.89 and 30,571.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,826.39 : 43,580.89 = 30,571.60 : x
2. Step 2: Convert to fraction form
   31,826.39/43,580.89 = 30,571.60/x
3. Step 3: Cross multiply
   31,826.39x = 43,580.89 × 30,571.60
4. Step 4: Simplify right side
   31,826.39x = 1,332,337,465.99
5. Step 5: Solve for x
   x = 1,332,337,465.99/31,826.39
6. Step 6: Final answer
   x = 41,862.67