Finding the Fourth Proportional to 72,205.43, 108,308.44 and 47,402.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,205.43 : 108,308.44 = 47,402.42 : x
2. Step 2: Convert to fraction form
   72,205.43/108,308.44 = 47,402.42/x
3. Step 3: Cross multiply
   72,205.43x = 108,308.44 × 47,402.42
4. Step 4: Simplify right side
   72,205.43x = 5,134,082,162.42
5. Step 5: Solve for x
   x = 5,134,082,162.42/72,205.43
6. Step 6: Final answer
   x = 71,103.82