Finding the Fourth Proportional to 108,722.72, 150,080.08 and 72,899.68

Step by Step Solution

1. Step 1: Write the proportion equation
   108,722.72 : 150,080.08 = 72,899.68 : x
2. Step 2: Convert to fraction form
   108,722.72/150,080.08 = 72,899.68/x
3. Step 3: Cross multiply
   108,722.72x = 150,080.08 × 72,899.68
4. Step 4: Simplify right side
   108,722.72x = 10,940,789,806.37
5. Step 5: Solve for x
   x = 10,940,789,806.37/108,722.72
6. Step 6: Final answer
   x = 100,630.21