Finding the Fourth Proportional to 236,522.10, 354,880.35 and 86,834.10

Step by Step Solution

1. Step 1: Write the proportion equation
   236,522.10 : 354,880.35 = 86,834.10 : x
2. Step 2: Convert to fraction form
   236,522.10/354,880.35 = 86,834.10/x
3. Step 3: Cross multiply
   236,522.10x = 354,880.35 × 86,834.10
4. Step 4: Simplify right side
   236,522.10x = 30,815,715,799.94
5. Step 5: Solve for x
   x = 30,815,715,799.94/236,522.10
6. Step 6: Final answer
   x = 130,286.83