Finding the Fourth Proportional to 82,921.51, 114,760.55 and 80,931.68

Step by Step Solution

1. Step 1: Write the proportion equation
   82,921.51 : 114,760.55 = 80,931.68 : x
2. Step 2: Convert to fraction form
   82,921.51/114,760.55 = 80,931.68/x
3. Step 3: Cross multiply
   82,921.51x = 114,760.55 × 80,931.68
4. Step 4: Simplify right side
   82,921.51x = 9,287,764,109.22
5. Step 5: Solve for x
   x = 9,287,764,109.22/82,921.51
6. Step 6: Final answer
   x = 112,006.69