Finding the Fourth Proportional to 30,515.50, 42,112.17 and 17,089.59

Step by Step Solution

1. Step 1: Write the proportion equation
   30,515.50 : 42,112.17 = 17,089.59 : x
2. Step 2: Convert to fraction form
   30,515.50/42,112.17 = 17,089.59/x
3. Step 3: Cross multiply
   30,515.50x = 42,112.17 × 17,089.59
4. Step 4: Simplify right side
   30,515.50x = 719,679,719.31
5. Step 5: Solve for x
   x = 719,679,719.31/30,515.50
6. Step 6: Final answer
   x = 23,584.07