Finding the Fourth Proportional to 111,315.12, 166,919.88 and 64,582.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111,315.12 : 166,919.88 = 64,582.32 : x
2. Step 2: Convert to fraction form
   111,315.12/166,919.88 = 64,582.32/x
3. Step 3: Cross multiply
   111,315.12x = 166,919.88 × 64,582.32
4. Step 4: Simplify right side
   111,315.12x = 10,780,073,104.52
5. Step 5: Solve for x
   x = 10,780,073,104.52/111,315.12
6. Step 6: Final answer
   x = 96,842.85