Finding the Fourth Proportional to 51,826.50, 71,520.57 and 30,606.12

Step by Step Solution

1. Step 1: Write the proportion equation
   51,826.50 : 71,520.57 = 30,606.12 : x
2. Step 2: Convert to fraction form
   51,826.50/71,520.57 = 30,606.12/x
3. Step 3: Cross multiply
   51,826.50x = 71,520.57 × 30,606.12
4. Step 4: Simplify right side
   51,826.50x = 2,188,967,147.89
5. Step 5: Solve for x
   x = 2,188,967,147.89/51,826.50
6. Step 6: Final answer
   x = 42,236.45