Finding the Fourth Proportional to 105,629.73, 145,773.05 and 60,315.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,629.73 : 145,773.05 = 60,315.09 : x
2. Step 2: Convert to fraction form
   105,629.73/145,773.05 = 60,315.09/x
3. Step 3: Cross multiply
   105,629.73x = 145,773.05 × 60,315.09
4. Step 4: Simplify right side
   105,629.73x = 8,792,314,630.32
5. Step 5: Solve for x
   x = 8,792,314,630.32/105,629.73
6. Step 6: Final answer
   x = 83,237.12