Finding the Fourth Proportional to 30,618, 42,270.12 and 23,153.04

Step by Step Solution

1. Step 1: Write the proportion equation
   30,618 : 42,270.12 = 23,153.04 : x
2. Step 2: Convert to fraction form
   30,618/42,270.12 = 23,153.04/x
3. Step 3: Cross multiply
   30,618x = 42,270.12 × 23,153.04
4. Step 4: Simplify right side
   30,618x = 978,681,779.16
5. Step 5: Solve for x
   x = 978,681,779.16/30,618
6. Step 6: Final answer
   x = 31,964.26