Finding the Fourth Proportional to 120,411.44, 166,167.96 and 72,044.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,411.44 : 166,167.96 = 72,044.72 : x
2. Step 2: Convert to fraction form
   120,411.44/166,167.96 = 72,044.72/x
3. Step 3: Cross multiply
   120,411.44x = 166,167.96 × 72,044.72
4. Step 4: Simplify right side
   120,411.44x = 11,971,524,151.17
5. Step 5: Solve for x
   x = 11,971,524,151.17/120,411.44
6. Step 6: Final answer
   x = 99,421.82