Finding the Fourth Proportional to 47,172.12, 70,760.72 and 12,112.08

Step by Step Solution

1. Step 1: Write the proportion equation
   47,172.12 : 70,760.72 = 12,112.08 : x
2. Step 2: Convert to fraction form
   47,172.12/70,760.72 = 12,112.08/x
3. Step 3: Cross multiply
   47,172.12x = 70,760.72 × 12,112.08
4. Step 4: Simplify right side
   47,172.12x = 857,059,501.50
5. Step 5: Solve for x
   x = 857,059,501.50/47,172.12
6. Step 6: Final answer
   x = 18,168.77