Finding the Fourth Proportional to 30,766.12, 42,449.78 and 17,337.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,766.12 : 42,449.78 = 17,337.40 : x
2. Step 2: Convert to fraction form
   30,766.12/42,449.78 = 17,337.40/x
3. Step 3: Cross multiply
   30,766.12x = 42,449.78 × 17,337.40
4. Step 4: Simplify right side
   30,766.12x = 735,968,815.77
5. Step 5: Solve for x
   x = 735,968,815.77/30,766.12
6. Step 6: Final answer
   x = 23,921.40