Finding the Fourth Proportional to 108,096.14, 149,129.72 and 72,229.34

Step by Step Solution

1. Step 1: Write the proportion equation
   108,096.14 : 149,129.72 = 72,229.34 : x
2. Step 2: Convert to fraction form
   108,096.14/149,129.72 = 72,229.34/x
3. Step 3: Cross multiply
   108,096.14x = 149,129.72 × 72,229.34
4. Step 4: Simplify right side
   108,096.14x = 10,771,541,249.98
5. Step 5: Solve for x
   x = 10,771,541,249.98/108,096.14
6. Step 6: Final answer
   x = 99,647.79