Finding the Fourth Proportional to 72,976.82, 100,708.18 and 39,442.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,976.82 : 100,708.18 = 39,442.82 : x
2. Step 2: Convert to fraction form
   72,976.82/100,708.18 = 39,442.82/x
3. Step 3: Cross multiply
   72,976.82x = 100,708.18 × 39,442.82
4. Step 4: Simplify right side
   72,976.82x = 3,972,214,014.12
5. Step 5: Solve for x
   x = 3,972,214,014.12/72,976.82
6. Step 6: Final answer
   x = 54,431.18