Finding the Fourth Proportional to 123,960.04, 171,061.81 and 72,286.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,960.04 : 171,061.81 = 72,286.56 : x
2. Step 2: Convert to fraction form
   123,960.04/171,061.81 = 72,286.56/x
3. Step 3: Cross multiply
   123,960.04x = 171,061.81 × 72,286.56
4. Step 4: Simplify right side
   123,960.04x = 12,365,469,611.56
5. Step 5: Solve for x
   x = 12,365,469,611.56/123,960.04
6. Step 6: Final answer
   x = 99,753.68