Finding the Fourth Proportional to 151,145.35, 208,582.34 and 86,613.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,145.35 : 208,582.34 = 86,613.31 : x
2. Step 2: Convert to fraction form
   151,145.35/208,582.34 = 86,613.31/x
3. Step 3: Cross multiply
   151,145.35x = 208,582.34 × 86,613.31
4. Step 4: Simplify right side
   151,145.35x = 18,066,006,874.95
5. Step 5: Solve for x
   x = 18,066,006,874.95/151,145.35
6. Step 6: Final answer
   x = 119,527.37