Finding the Fourth Proportional to 155,496.71, 214,583.04 and 86,585.69

Step by Step Solution

1. Step 1: Write the proportion equation
   155,496.71 : 214,583.04 = 86,585.69 : x
2. Step 2: Convert to fraction form
   155,496.71/214,583.04 = 86,585.69/x
3. Step 3: Cross multiply
   155,496.71x = 214,583.04 × 86,585.69
4. Step 4: Simplify right side
   155,496.71x = 18,579,819,507.78
5. Step 5: Solve for x
   x = 18,579,819,507.78/155,496.71
6. Step 6: Final answer
   x = 119,486.90