Finding the Fourth Proportional to 89,388, 123,358.68 and 49,105.53

Step by Step Solution

1. Step 1: Write the proportion equation
   89,388 : 123,358.68 = 49,105.53 : x
2. Step 2: Convert to fraction form
   89,388/123,358.68 = 49,105.53/x
3. Step 3: Cross multiply
   89,388x = 123,358.68 × 49,105.53
4. Step 4: Simplify right side
   89,388x = 6,057,593,361.50
5. Step 5: Solve for x
   x = 6,057,593,361.50/89,388
6. Step 6: Final answer
   x = 67,767.41