Finding the Fourth Proportional to 105,797.76, 146,041.56 and 71,821.44

Step by Step Solution

1. Step 1: Write the proportion equation
   105,797.76 : 146,041.56 = 71,821.44 : x
2. Step 2: Convert to fraction form
   105,797.76/146,041.56 = 71,821.44/x
3. Step 3: Cross multiply
   105,797.76x = 146,041.56 × 71,821.44
4. Step 4: Simplify right side
   105,797.76x = 10,488,915,139.05
5. Step 5: Solve for x
   x = 10,488,915,139.05/105,797.76
6. Step 6: Final answer
   x = 99,141.18