Finding the Fourth Proportional to 51,311.16, 70,790.67 and 30,086.31

Step by Step Solution

1. Step 1: Write the proportion equation
   51,311.16 : 70,790.67 = 30,086.31 : x
2. Step 2: Convert to fraction form
   51,311.16/70,790.67 = 30,086.31/x
3. Step 3: Cross multiply
   51,311.16x = 70,790.67 × 30,086.31
4. Step 4: Simplify right side
   51,311.16x = 2,129,830,042.73
5. Step 5: Solve for x
   x = 2,129,830,042.73/51,311.16
6. Step 6: Final answer
   x = 41,508.12