Finding the Fourth Proportional to 30,961.80, 42,727.32 and 16,814.61

Step by Step Solution

1. Step 1: Write the proportion equation
   30,961.80 : 42,727.32 = 16,814.61 : x
2. Step 2: Convert to fraction form
   30,961.80/42,727.32 = 16,814.61/x
3. Step 3: Cross multiply
   30,961.80x = 42,727.32 × 16,814.61
4. Step 4: Simplify right side
   30,961.80x = 718,443,222.15
5. Step 5: Solve for x
   x = 718,443,222.15/30,961.80
6. Step 6: Final answer
   x = 23,204.18