Finding the Fourth Proportional to 111,123.20, 166,568.16 and 79,941.44

Step by Step Solution

1. Step 1: Write the proportion equation
   111,123.20 : 166,568.16 = 79,941.44 : x
2. Step 2: Convert to fraction form
   111,123.20/166,568.16 = 79,941.44/x
3. Step 3: Cross multiply
   111,123.20x = 166,568.16 × 79,941.44
4. Step 4: Simplify right side
   111,123.20x = 13,315,698,568.55
5. Step 5: Solve for x
   x = 13,315,698,568.55/111,123.20
6. Step 6: Final answer
   x = 119,828.25