Finding the Fourth Proportional to 30,680.27, 42,338.04 and 20,069.67

Step by Step Solution

1. Step 1: Write the proportion equation
   30,680.27 : 42,338.04 = 20,069.67 : x
2. Step 2: Convert to fraction form
   30,680.27/42,338.04 = 20,069.67/x
3. Step 3: Cross multiply
   30,680.27x = 42,338.04 × 20,069.67
4. Step 4: Simplify right side
   30,680.27x = 849,710,687.65
5. Step 5: Solve for x
   x = 849,710,687.65/30,680.27
6. Step 6: Final answer
   x = 27,695.67