Finding the Fourth Proportional to 141,667.74, 212,433.84 and 82,520.28

Step by Step Solution

1. Step 1: Write the proportion equation
   141,667.74 : 212,433.84 = 82,520.28 : x
2. Step 2: Convert to fraction form
   141,667.74/212,433.84 = 82,520.28/x
3. Step 3: Cross multiply
   141,667.74x = 212,433.84 × 82,520.28
4. Step 4: Simplify right side
   141,667.74x = 17,530,099,958.28
5. Step 5: Solve for x
   x = 17,530,099,958.28/141,667.74
6. Step 6: Final answer
   x = 123,740.94