Finding the Fourth Proportional to 30,635, 42,259.92 and 20,546.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,635 : 42,259.92 = 20,546.12 : x
2. Step 2: Convert to fraction form
   30,635/42,259.92 = 20,546.12/x
3. Step 3: Cross multiply
   30,635x = 42,259.92 × 20,546.12
4. Step 4: Simplify right side
   30,635x = 868,277,387.51
5. Step 5: Solve for x
   x = 868,277,387.51/30,635
6. Step 6: Final answer
   x = 28,342.66