Finding the Fourth Proportional to 105,059.50, 144,976.20 and 59,731.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,059.50 : 144,976.20 = 59,731.09 : x
2. Step 2: Convert to fraction form
   105,059.50/144,976.20 = 59,731.09/x
3. Step 3: Cross multiply
   105,059.50x = 144,976.20 × 59,731.09
4. Step 4: Simplify right side
   105,059.50x = 8,659,586,450.06
5. Step 5: Solve for x
   x = 8,659,586,450.06/105,059.50
6. Step 6: Final answer
   x = 82,425.54