Finding the Fourth Proportional to 30,582.75, 42,205.55 and 17,155.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,582.75 : 42,205.55 = 17,155.25 : x
2. Step 2: Convert to fraction form
   30,582.75/42,205.55 = 17,155.25/x
3. Step 3: Cross multiply
   30,582.75x = 42,205.55 × 17,155.25
4. Step 4: Simplify right side
   30,582.75x = 724,046,464.83
5. Step 5: Solve for x
   x = 724,046,464.83/30,582.75
6. Step 6: Final answer
   x = 23,675.00