Finding the Fourth Proportional to 89,715.24, 123,815.94 and 67,320.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,715.24 : 123,815.94 = 67,320.36 : x
2. Step 2: Convert to fraction form
   89,715.24/123,815.94 = 67,320.36/x
3. Step 3: Cross multiply
   89,715.24x = 123,815.94 × 67,320.36
4. Step 4: Simplify right side
   89,715.24x = 8,335,333,654.54
5. Step 5: Solve for x
   x = 8,335,333,654.54/89,715.24
6. Step 6: Final answer
   x = 92,908.78