Finding the Fourth Proportional to 128,086.96, 192,126.34 and 57,966.27

Step by Step Solution

1. Step 1: Write the proportion equation
   128,086.96 : 192,126.34 = 57,966.27 : x
2. Step 2: Convert to fraction form
   128,086.96/192,126.34 = 57,966.27/x
3. Step 3: Cross multiply
   128,086.96x = 192,126.34 × 57,966.27
4. Step 4: Simplify right side
   128,086.96x = 11,136,847,298.55
5. Step 5: Solve for x
   x = 11,136,847,298.55/128,086.96
6. Step 6: Final answer
   x = 86,947.55