Finding the Fourth Proportional to 108,439.04, 149,651.60 and 68,137.89

Step by Step Solution

1. Step 1: Write the proportion equation
   108,439.04 : 149,651.60 = 68,137.89 : x
2. Step 2: Convert to fraction form
   108,439.04/149,651.60 = 68,137.89/x
3. Step 3: Cross multiply
   108,439.04x = 149,651.60 × 68,137.89
4. Step 4: Simplify right side
   108,439.04x = 10,196,943,918.43
5. Step 5: Solve for x
   x = 10,196,943,918.43/108,439.04
6. Step 6: Final answer
   x = 94,033.89