Finding the Fourth Proportional to 51,519.31, 71,087.02 and 30,290.83

Step by Step Solution

1. Step 1: Write the proportion equation
   51,519.31 : 71,087.02 = 30,290.83 : x
2. Step 2: Convert to fraction form
   51,519.31/71,087.02 = 30,290.83/x
3. Step 3: Cross multiply
   51,519.31x = 71,087.02 × 30,290.83
4. Step 4: Simplify right side
   51,519.31x = 2,153,284,838.03
5. Step 5: Solve for x
   x = 2,153,284,838.03/51,519.31
6. Step 6: Final answer
   x = 41,795.68