Finding the Fourth Proportional to 47,105.12, 64,980 and 38,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,105.12 : 64,980 = 38,162.72 : x
2. Step 2: Convert to fraction form
   47,105.12/64,980 = 38,162.72/x
3. Step 3: Cross multiply
   47,105.12x = 64,980 × 38,162.72
4. Step 4: Simplify right side
   47,105.12x = 2,479,813,545.60
5. Step 5: Solve for x
   x = 2,479,813,545.60/47,105.12
6. Step 6: Final answer
   x = 52,644.25