Finding the Fourth Proportional to 143,584.88, 215,365 and 87,410.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143,584.88 : 215,365 = 87,410.42 : x
2. Step 2: Convert to fraction form
   143,584.88/215,365 = 87,410.42/x
3. Step 3: Cross multiply
   143,584.88x = 215,365 × 87,410.42
4. Step 4: Simplify right side
   143,584.88x = 18,825,145,103.30
5. Step 5: Solve for x
   x = 18,825,145,103.30/143,584.88
6. Step 6: Final answer
   x = 131,108.13