Finding the Fourth Proportional to 192,667.82, 289,084.76 and 80,370.15

Step by Step Solution

1. Step 1: Write the proportion equation
   192,667.82 : 289,084.76 = 80,370.15 : x
2. Step 2: Convert to fraction form
   192,667.82/289,084.76 = 80,370.15/x
3. Step 3: Cross multiply
   192,667.82x = 289,084.76 × 80,370.15
4. Step 4: Simplify right side
   192,667.82x = 23,233,785,523.91
5. Step 5: Solve for x
   x = 23,233,785,523.91/192,667.82
6. Step 6: Final answer
   x = 120,589.86