Finding the Fourth Proportional to 105,776.75, 145,984.83 and 60,456.65

Step by Step Solution

1. Step 1: Write the proportion equation
   105,776.75 : 145,984.83 = 60,456.65 : x
2. Step 2: Convert to fraction form
   105,776.75/145,984.83 = 60,456.65/x
3. Step 3: Cross multiply
   105,776.75x = 145,984.83 × 60,456.65
4. Step 4: Simplify right side
   105,776.75x = 8,825,752,815.98
5. Step 5: Solve for x
   x = 8,825,752,815.98/105,776.75
6. Step 6: Final answer
   x = 83,437.55