Finding the Fourth Proportional to 30,879.58, 42,613.78 and 16,732.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,879.58 : 42,613.78 = 16,732.42 : x
2. Step 2: Convert to fraction form
   30,879.58/42,613.78 = 16,732.42/x
3. Step 3: Cross multiply
   30,879.58x = 42,613.78 × 16,732.42
4. Step 4: Simplify right side
   30,879.58x = 713,031,368.02
5. Step 5: Solve for x
   x = 713,031,368.02/30,879.58
6. Step 6: Final answer
   x = 23,090.71