Finding the Fourth Proportional to 105,645.72, 145,795.06 and 60,324.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,645.72 : 145,795.06 = 60,324.09 : x
2. Step 2: Convert to fraction form
   105,645.72/145,795.06 = 60,324.09/x
3. Step 3: Cross multiply
   105,645.72x = 145,795.06 × 60,324.09
4. Step 4: Simplify right side
   105,645.72x = 8,794,954,839.43
5. Step 5: Solve for x
   x = 8,794,954,839.43/105,645.72
6. Step 6: Final answer
   x = 83,249.52