Finding the Fourth Proportional to 30,722.94, 42,404.31 and 18,149.58

Step by Step Solution

1. Step 1: Write the proportion equation
   30,722.94 : 42,404.31 = 18,149.58 : x
2. Step 2: Convert to fraction form
   30,722.94/42,404.31 = 18,149.58/x
3. Step 3: Cross multiply
   30,722.94x = 42,404.31 × 18,149.58
4. Step 4: Simplify right side
   30,722.94x = 769,620,416.69
5. Step 5: Solve for x
   x = 769,620,416.69/30,722.94
6. Step 6: Final answer
   x = 25,050.35