Finding the Fourth Proportional to 30,849.58, 42,567.83 and 17,420.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,849.58 : 42,567.83 = 17,420.57 : x
2. Step 2: Convert to fraction form
   30,849.58/42,567.83 = 17,420.57/x
3. Step 3: Cross multiply
   30,849.58x = 42,567.83 × 17,420.57
4. Step 4: Simplify right side
   30,849.58x = 741,555,787.28
5. Step 5: Solve for x
   x = 741,555,787.28/30,849.58
6. Step 6: Final answer
   x = 24,037.80