Finding the Fourth Proportional to 30,870.48, 42,600.96 and 16,723.08

Step by Step Solution

1. Step 1: Write the proportion equation
   30,870.48 : 42,600.96 = 16,723.08 : x
2. Step 2: Convert to fraction form
   30,870.48/42,600.96 = 16,723.08/x
3. Step 3: Cross multiply
   30,870.48x = 42,600.96 × 16,723.08
4. Step 4: Simplify right side
   30,870.48x = 712,419,262.16
5. Step 5: Solve for x
   x = 712,419,262.16/30,870.48
6. Step 6: Final answer
   x = 23,077.69