Finding the Fourth Proportional to 273,667.59, 410,498.55 and 86,679.09

Step by Step Solution

1. Step 1: Write the proportion equation
   273,667.59 : 410,498.55 = 86,679.09 : x
2. Step 2: Convert to fraction form
   273,667.59/410,498.55 = 86,679.09/x
3. Step 3: Cross multiply
   273,667.59x = 410,498.55 × 86,679.09
4. Step 4: Simplify right side
   273,667.59x = 35,581,640,760.32
5. Step 5: Solve for x
   x = 35,581,640,760.32/273,667.59
6. Step 6: Final answer
   x = 130,017.74