Finding the Fourth Proportional to 30,754.50, 42,442.78 and 18,814.10

Step by Step Solution

1. Step 1: Write the proportion equation
   30,754.50 : 42,442.78 = 18,814.10 : x
2. Step 2: Convert to fraction form
   30,754.50/42,442.78 = 18,814.10/x
3. Step 3: Cross multiply
   30,754.50x = 42,442.78 × 18,814.10
4. Step 4: Simplify right side
   30,754.50x = 798,522,707.20
5. Step 5: Solve for x
   x = 798,522,707.20/30,754.50
6. Step 6: Final answer
   x = 25,964.42