Finding the Fourth Proportional to 30,540.12, 42,144.84 and 17,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,540.12 : 42,144.84 = 17,111.32 : x
2. Step 2: Convert to fraction form
   30,540.12/42,144.84 = 17,111.32/x
3. Step 3: Cross multiply
   30,540.12x = 42,144.84 × 17,111.32
4. Step 4: Simplify right side
   30,540.12x = 721,153,843.59
5. Step 5: Solve for x
   x = 721,153,843.59/30,540.12
6. Step 6: Final answer
   x = 23,613.33