Finding the Fourth Proportional to 108,720.72, 150,020.10 and 60,321.87

Step by Step Solution

1. Step 1: Write the proportion equation
   108,720.72 : 150,020.10 = 60,321.87 : x
2. Step 2: Convert to fraction form
   108,720.72/150,020.10 = 60,321.87/x
3. Step 3: Cross multiply
   108,720.72x = 150,020.10 × 60,321.87
4. Step 4: Simplify right side
   108,720.72x = 9,049,492,969.59
5. Step 5: Solve for x
   x = 9,049,492,969.59/108,720.72
6. Step 6: Final answer
   x = 83,236.14