Finding the Fourth Proportional to 108,912.89, 150,282.15 and 68,072.21

Step by Step Solution

1. Step 1: Write the proportion equation
   108,912.89 : 150,282.15 = 68,072.21 : x
2. Step 2: Convert to fraction form
   108,912.89/150,282.15 = 68,072.21/x
3. Step 3: Cross multiply
   108,912.89x = 150,282.15 × 68,072.21
4. Step 4: Simplify right side
   108,912.89x = 10,230,037,322.64
5. Step 5: Solve for x
   x = 10,230,037,322.64/108,912.89
6. Step 6: Final answer
   x = 93,928.62