Finding the Fourth Proportional to 30,508.81, 42,102.17 and 17,080.09

Step by Step Solution

1. Step 1: Write the proportion equation
   30,508.81 : 42,102.17 = 17,080.09 : x
2. Step 2: Convert to fraction form
   30,508.81/42,102.17 = 17,080.09/x
3. Step 3: Cross multiply
   30,508.81x = 42,102.17 × 17,080.09
4. Step 4: Simplify right side
   30,508.81x = 719,108,852.80
5. Step 5: Solve for x
   x = 719,108,852.80/30,508.81
6. Step 6: Final answer
   x = 23,570.53