Finding the Fourth Proportional to 30,109.50, 41,551.11 and 16,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,109.50 : 41,551.11 = 16,861.50 : x
2. Step 2: Convert to fraction form
   30,109.50/41,551.11 = 16,861.50/x
3. Step 3: Cross multiply
   30,109.50x = 41,551.11 × 16,861.50
4. Step 4: Simplify right side
   30,109.50x = 700,614,041.27
5. Step 5: Solve for x
   x = 700,614,041.27/30,109.50
6. Step 6: Final answer
   x = 23,268.87