Finding the Fourth Proportional to 109,191.24, 150,633.54 and 78,928.56

Step by Step Solution

1. Step 1: Write the proportion equation
   109,191.24 : 150,633.54 = 78,928.56 : x
2. Step 2: Convert to fraction form
   109,191.24/150,633.54 = 78,928.56/x
3. Step 3: Cross multiply
   109,191.24x = 150,633.54 × 78,928.56
4. Step 4: Simplify right side
   109,191.24x = 11,889,288,399.90
5. Step 5: Solve for x
   x = 11,889,288,399.90/109,191.24
6. Step 6: Final answer
   x = 108,885.00