Finding the Fourth Proportional to 105,786.76, 145,995.62 and 60,455.89

Step by Step Solution

1. Step 1: Write the proportion equation
   105,786.76 : 145,995.62 = 60,455.89 : x
2. Step 2: Convert to fraction form
   105,786.76/145,995.62 = 60,455.89/x
3. Step 3: Cross multiply
   105,786.76x = 145,995.62 × 60,455.89
4. Step 4: Simplify right side
   105,786.76x = 8,826,294,992.06
5. Step 5: Solve for x
   x = 8,826,294,992.06/105,786.76
6. Step 6: Final answer
   x = 83,434.78