Finding the Fourth Proportional to 30,449.32, 42,020.58 and 17,020.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,449.32 : 42,020.58 = 17,020.84 : x
2. Step 2: Convert to fraction form
   30,449.32/42,020.58 = 17,020.84/x
3. Step 3: Cross multiply
   30,449.32x = 42,020.58 × 17,020.84
4. Step 4: Simplify right side
   30,449.32x = 715,225,568.89
5. Step 5: Solve for x
   x = 715,225,568.89/30,449.32
6. Step 6: Final answer
   x = 23,489.05