Finding the Fourth Proportional to 323,277.09, 484,915.31 and 86,613.31

Step by Step Solution

1. Step 1: Write the proportion equation
   323,277.09 : 484,915.31 = 86,613.31 : x
2. Step 2: Convert to fraction form
   323,277.09/484,915.31 = 86,613.31/x
3. Step 3: Cross multiply
   323,277.09x = 484,915.31 × 86,613.31
4. Step 4: Simplify right side
   323,277.09x = 42,000,120,068.78
5. Step 5: Solve for x
   x = 42,000,120,068.78/323,277.09
6. Step 6: Final answer
   x = 129,919.88