Finding the Fourth Proportional to 30,514.90, 42,111.58 and 17,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,514.90 : 42,111.58 = 17,086.72 : x
2. Step 2: Convert to fraction form
   30,514.90/42,111.58 = 17,086.72/x
3. Step 3: Cross multiply
   30,514.90x = 42,111.58 × 17,086.72
4. Step 4: Simplify right side
   30,514.90x = 719,548,776.22
5. Step 5: Solve for x
   x = 719,548,776.22/30,514.90
6. Step 6: Final answer
   x = 23,580.24