Finding the Fourth Proportional to 155,131.48, 214,084.33 and 86,227.40

Step by Step Solution

1. Step 1: Write the proportion equation
   155,131.48 : 214,084.33 = 86,227.40 : x
2. Step 2: Convert to fraction form
   155,131.48/214,084.33 = 86,227.40/x
3. Step 3: Cross multiply
   155,131.48x = 214,084.33 × 86,227.40
4. Step 4: Simplify right side
   155,131.48x = 18,459,934,086.22
5. Step 5: Solve for x
   x = 18,459,934,086.22/155,131.48
6. Step 6: Final answer
   x = 118,995.41