Finding the Fourth Proportional to 111,936.56, 154,478.92 and 64,189.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111,936.56 : 154,478.92 = 64,189.52 : x
2. Step 2: Convert to fraction form
   111,936.56/154,478.92 = 64,189.52/x
3. Step 3: Cross multiply
   111,936.56x = 154,478.92 × 64,189.52
4. Step 4: Simplify right side
   111,936.56x = 9,915,927,724.92
5. Step 5: Solve for x
   x = 9,915,927,724.92/111,936.56
6. Step 6: Final answer
   x = 88,585.25