Finding the Fourth Proportional to 30,507.16, 42,100.68 and 17,078.35

Step by Step Solution

1. Step 1: Write the proportion equation
   30,507.16 : 42,100.68 = 17,078.35 : x
2. Step 2: Convert to fraction form
   30,507.16/42,100.68 = 17,078.35/x
3. Step 3: Cross multiply
   30,507.16x = 42,100.68 × 17,078.35
4. Step 4: Simplify right side
   30,507.16x = 719,010,148.28
5. Step 5: Solve for x
   x = 719,010,148.28/30,507.16
6. Step 6: Final answer
   x = 23,568.57