Finding the Fourth Proportional to 47,419.02, 71,127.72 and 14,139.18

Step by Step Solution

1. Step 1: Write the proportion equation
   47,419.02 : 71,127.72 = 14,139.18 : x
2. Step 2: Convert to fraction form
   47,419.02/71,127.72 = 14,139.18/x
3. Step 3: Cross multiply
   47,419.02x = 71,127.72 × 14,139.18
4. Step 4: Simplify right side
   47,419.02x = 1,005,687,636.07
5. Step 5: Solve for x
   x = 1,005,687,636.07/47,419.02
6. Step 6: Final answer
   x = 21,208.53