Finding the Fourth Proportional to 128,096.29, 192,227.46 and 57,976.21

Step by Step Solution

1. Step 1: Write the proportion equation
   128,096.29 : 192,227.46 = 57,976.21 : x
2. Step 2: Convert to fraction form
   128,096.29/192,227.46 = 57,976.21/x
3. Step 3: Cross multiply
   128,096.29x = 192,227.46 × 57,976.21
4. Step 4: Simplify right side
   128,096.29x = 11,144,619,588.73
5. Step 5: Solve for x
   x = 11,144,619,588.73/128,096.29
6. Step 6: Final answer
   x = 87,001.89