Finding the Fourth Proportional to 30,722.42, 42,383.72 and 17,618.45

Step by Step Solution

1. Step 1: Write the proportion equation
   30,722.42 : 42,383.72 = 17,618.45 : x
2. Step 2: Convert to fraction form
   30,722.42/42,383.72 = 17,618.45/x
3. Step 3: Cross multiply
   30,722.42x = 42,383.72 × 17,618.45
4. Step 4: Simplify right side
   30,722.42x = 746,735,283.76
5. Step 5: Solve for x
   x = 746,735,283.76/30,722.42
6. Step 6: Final answer
   x = 24,305.87