Finding the Fourth Proportional to 108,859.56, 150,217.89 and 61,103.68

Step by Step Solution

1. Step 1: Write the proportion equation
   108,859.56 : 150,217.89 = 61,103.68 : x
2. Step 2: Convert to fraction form
   108,859.56/150,217.89 = 61,103.68/x
3. Step 3: Cross multiply
   108,859.56x = 150,217.89 × 61,103.68
4. Step 4: Simplify right side
   108,859.56x = 9,178,865,880.84
5. Step 5: Solve for x
   x = 9,178,865,880.84/108,859.56
6. Step 6: Final answer
   x = 84,318.42