Finding the Fourth Proportional to 128,667.14, 192,934.89 and 53,766.84

Step by Step Solution

1. Step 1: Write the proportion equation
   128,667.14 : 192,934.89 = 53,766.84 : x
2. Step 2: Convert to fraction form
   128,667.14/192,934.89 = 53,766.84/x
3. Step 3: Cross multiply
   128,667.14x = 192,934.89 × 53,766.84
4. Step 4: Simplify right side
   128,667.14x = 10,373,499,361.05
5. Step 5: Solve for x
   x = 10,373,499,361.05/128,667.14
6. Step 6: Final answer
   x = 80,622.76