Finding the Fourth Proportional to 111,939.38, 167,908.88 and 76,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,939.38 : 167,908.88 = 76,772.42 : x
2. Step 2: Convert to fraction form
   111,939.38/167,908.88 = 76,772.42/x
3. Step 3: Cross multiply
   111,939.38x = 167,908.88 × 76,772.42
4. Step 4: Simplify right side
   111,939.38x = 12,890,771,057.09
5. Step 5: Solve for x
   x = 12,890,771,057.09/111,939.38
6. Step 6: Final answer
   x = 115,158.50