Finding the Fourth Proportional to 30,958.56, 42,723.12 and 16,811.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,958.56 : 42,723.12 = 16,811.52 : x
2. Step 2: Convert to fraction form
   30,958.56/42,723.12 = 16,811.52/x
3. Step 3: Cross multiply
   30,958.56x = 42,723.12 × 16,811.52
4. Step 4: Simplify right side
   30,958.56x = 718,240,586.34
5. Step 5: Solve for x
   x = 718,240,586.34/30,958.56
6. Step 6: Final answer
   x = 23,200.06