Finding the Fourth Proportional to 47,142, 70,717.25 and 12,081.96

Step by Step Solution

1. Step 1: Write the proportion equation
   47,142 : 70,717.25 = 12,081.96 : x
2. Step 2: Convert to fraction form
   47,142/70,717.25 = 12,081.96/x
3. Step 3: Cross multiply
   47,142x = 70,717.25 × 12,081.96
4. Step 4: Simplify right side
   47,142x = 854,403,016.01
5. Step 5: Solve for x
   x = 854,403,016.01/47,142
6. Step 6: Final answer
   x = 18,124.03