Finding the Fourth Proportional to 151,144.35, 208,580.96 and 86,612.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,144.35 : 208,580.96 = 86,612.31 : x
2. Step 2: Convert to fraction form
   151,144.35/208,580.96 = 86,612.31/x
3. Step 3: Cross multiply
   151,144.35x = 208,580.96 × 86,612.31
4. Step 4: Simplify right side
   151,144.35x = 18,065,678,334.56
5. Step 5: Solve for x
   x = 18,065,678,334.56/151,144.35
6. Step 6: Final answer
   x = 119,525.99