Finding the Fourth Proportional to 170,049.02, 254,964.18 and 81,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   170,049.02 : 254,964.18 = 81,300.56 : x
2. Step 2: Convert to fraction form
   170,049.02/254,964.18 = 81,300.56/x
3. Step 3: Cross multiply
   170,049.02x = 254,964.18 × 81,300.56
4. Step 4: Simplify right side
   170,049.02x = 20,728,730,613.94
5. Step 5: Solve for x
   x = 20,728,730,613.94/170,049.02
6. Step 6: Final answer
   x = 121,898.56