Finding the Fourth Proportional to 30,448.32, 42,019.20 and 17,019.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,448.32 : 42,019.20 = 17,019.84 : x
2. Step 2: Convert to fraction form
   30,448.32/42,019.20 = 17,019.84/x
3. Step 3: Cross multiply
   30,448.32x = 42,019.20 × 17,019.84
4. Step 4: Simplify right side
   30,448.32x = 715,160,060.93
5. Step 5: Solve for x
   x = 715,160,060.93/30,448.32
6. Step 6: Final answer
   x = 23,487.67