Finding the Fourth Proportional to 30,835.71, 42,555.20 and 17,402.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,835.71 : 42,555.20 = 17,402.06 : x
2. Step 2: Convert to fraction form
   30,835.71/42,555.20 = 17,402.06/x
3. Step 3: Cross multiply
   30,835.71x = 42,555.20 × 17,402.06
4. Step 4: Simplify right side
   30,835.71x = 740,548,143.71
5. Step 5: Solve for x
   x = 740,548,143.71/30,835.71
6. Step 6: Final answer
   x = 24,015.93