Finding the Fourth Proportional to 51,721.30, 71,366.76 and 30,504.76

Step by Step Solution

1. Step 1: Write the proportion equation
   51,721.30 : 71,366.76 = 30,504.76 : x
2. Step 2: Convert to fraction form
   51,721.30/71,366.76 = 30,504.76/x
3. Step 3: Cross multiply
   51,721.30x = 71,366.76 × 30,504.76
4. Step 4: Simplify right side
   51,721.30x = 2,177,025,885.78
5. Step 5: Solve for x
   x = 2,177,025,885.78/51,721.30
6. Step 6: Final answer
   x = 42,091.48