Finding the Fourth Proportional to 105,991.72, 146,270.28 and 60,669.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,991.72 : 146,270.28 = 60,669.52 : x
2. Step 2: Convert to fraction form
   105,991.72/146,270.28 = 60,669.52/x
3. Step 3: Cross multiply
   105,991.72x = 146,270.28 × 60,669.52
4. Step 4: Simplify right side
   105,991.72x = 8,874,147,677.87
5. Step 5: Solve for x
   x = 8,874,147,677.87/105,991.72
6. Step 6: Final answer
   x = 83,724.91