Finding the Fourth Proportional to 99,338.43, 137,137.83 and 76,626.44

Step by Step Solution

1. Step 1: Write the proportion equation
   99,338.43 : 137,137.83 = 76,626.44 : x
2. Step 2: Convert to fraction form
   99,338.43/137,137.83 = 76,626.44/x
3. Step 3: Cross multiply
   99,338.43x = 137,137.83 × 76,626.44
4. Step 4: Simplify right side
   99,338.43x = 10,508,383,016.54
5. Step 5: Solve for x
   x = 10,508,383,016.54/99,338.43
6. Step 6: Final answer
   x = 105,783.66