Finding the Fourth Proportional to 155,109.18, 214,049.89 and 87,127.19

Step by Step Solution

1. Step 1: Write the proportion equation
   155,109.18 : 214,049.89 = 87,127.19 : x
2. Step 2: Convert to fraction form
   155,109.18/214,049.89 = 87,127.19/x
3. Step 3: Cross multiply
   155,109.18x = 214,049.89 × 87,127.19
4. Step 4: Simplify right side
   155,109.18x = 18,649,566,480.89
5. Step 5: Solve for x
   x = 18,649,566,480.89/155,109.18
6. Step 6: Final answer
   x = 120,235.09