Finding the Fourth Proportional to 108,749.55, 150,105.24 and 65,721.81

Step by Step Solution

1. Step 1: Write the proportion equation
   108,749.55 : 150,105.24 = 65,721.81 : x
2. Step 2: Convert to fraction form
   108,749.55/150,105.24 = 65,721.81/x
3. Step 3: Cross multiply
   108,749.55x = 150,105.24 × 65,721.81
4. Step 4: Simplify right side
   108,749.55x = 9,865,188,063.28
5. Step 5: Solve for x
   x = 9,865,188,063.28/108,749.55
6. Step 6: Final answer
   x = 90,714.75