Finding the Fourth Proportional to 79,401.74, 119,577.94 and 72,315.86

Step by Step Solution

1. Step 1: Write the proportion equation
   79,401.74 : 119,577.94 = 72,315.86 : x
2. Step 2: Convert to fraction form
   79,401.74/119,577.94 = 72,315.86/x
3. Step 3: Cross multiply
   79,401.74x = 119,577.94 × 72,315.86
4. Step 4: Simplify right side
   79,401.74x = 8,647,381,568.13
5. Step 5: Solve for x
   x = 8,647,381,568.13/79,401.74
6. Step 6: Final answer
   x = 108,906.70