Finding the Fourth Proportional to 105,900.76, 146,045.54 and 71,960.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,900.76 : 146,045.54 = 71,960.14 : x
2. Step 2: Convert to fraction form
   105,900.76/146,045.54 = 71,960.14/x
3. Step 3: Cross multiply
   105,900.76x = 146,045.54 × 71,960.14
4. Step 4: Simplify right side
   105,900.76x = 10,509,457,504.78
5. Step 5: Solve for x
   x = 10,509,457,504.78/105,900.76
6. Step 6: Final answer
   x = 99,238.74