Finding the Fourth Proportional to 445,096.72, 667,647.96 and 112,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   445,096.72 : 667,647.96 = 112,672.72 : x
2. Step 2: Convert to fraction form
   445,096.72/667,647.96 = 112,672.72/x
3. Step 3: Cross multiply
   445,096.72x = 667,647.96 × 112,672.72
4. Step 4: Simplify right side
   445,096.72x = 75,225,711,655.65
5. Step 5: Solve for x
   x = 75,225,711,655.65/445,096.72
6. Step 6: Final answer
   x = 169,009.81