Finding the Fourth Proportional to 111,298.32, 166,861.20 and 55,099.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,298.32 : 166,861.20 = 55,099.68 : x
2. Step 2: Convert to fraction form
   111,298.32/166,861.20 = 55,099.68/x
3. Step 3: Cross multiply
   111,298.32x = 166,861.20 × 55,099.68
4. Step 4: Simplify right side
   111,298.32x = 9,193,998,724.42
5. Step 5: Solve for x
   x = 9,193,998,724.42/111,298.32
6. Step 6: Final answer
   x = 82,606.81