Finding the Fourth Proportional to 72,183.12, 108,063.52 and 42,105.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,183.12 : 108,063.52 = 42,105.40 : x
2. Step 2: Convert to fraction form
   72,183.12/108,063.52 = 42,105.40/x
3. Step 3: Cross multiply
   72,183.12x = 108,063.52 × 42,105.40
4. Step 4: Simplify right side
   72,183.12x = 4,550,057,735.01
5. Step 5: Solve for x
   x = 4,550,057,735.01/72,183.12
6. Step 6: Final answer
   x = 63,034.93