Finding the Fourth Proportional to 30,885.71, 42,622.61 and 17,457.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,885.71 : 42,622.61 = 17,457.12 : x
2. Step 2: Convert to fraction form
   30,885.71/42,622.61 = 17,457.12/x
3. Step 3: Cross multiply
   30,885.71x = 42,622.61 × 17,457.12
4. Step 4: Simplify right side
   30,885.71x = 744,067,930.20
5. Step 5: Solve for x
   x = 744,067,930.20/30,885.71
6. Step 6: Final answer
   x = 24,091.01