Finding the Fourth Proportional to 108,659.02, 150,036.15 and 72,879.70

Step by Step Solution

1. Step 1: Write the proportion equation
   108,659.02 : 150,036.15 = 72,879.70 : x
2. Step 2: Convert to fraction form
   108,659.02/150,036.15 = 72,879.70/x
3. Step 3: Cross multiply
   108,659.02x = 150,036.15 × 72,879.70
4. Step 4: Simplify right side
   108,659.02x = 10,934,589,601.16
5. Step 5: Solve for x
   x = 10,934,589,601.16/108,659.02
6. Step 6: Final answer
   x = 100,632.14