Finding the Fourth Proportional to 30,687.61, 42,165.38 and 24,389.05

Step by Step Solution

1. Step 1: Write the proportion equation
   30,687.61 : 42,165.38 = 24,389.05 : x
2. Step 2: Convert to fraction form
   30,687.61/42,165.38 = 24,389.05/x
3. Step 3: Cross multiply
   30,687.61x = 42,165.38 × 24,389.05
4. Step 4: Simplify right side
   30,687.61x = 1,028,373,561.09
5. Step 5: Solve for x
   x = 1,028,373,561.09/30,687.61
6. Step 6: Final answer
   x = 33,511.03