Finding the Fourth Proportional to 30,155.94, 41,615.46 and 16,728.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,155.94 : 41,615.46 = 16,728.30 : x
2. Step 2: Convert to fraction form
   30,155.94/41,615.46 = 16,728.30/x
3. Step 3: Cross multiply
   30,155.94x = 41,615.46 × 16,728.30
4. Step 4: Simplify right side
   30,155.94x = 696,155,899.52
5. Step 5: Solve for x
   x = 696,155,899.52/30,155.94
6. Step 6: Final answer
   x = 23,085.20