Finding the Fourth Proportional to 87,766.05, 131,662.74 and 28,587.96

Step by Step Solution

1. Step 1: Write the proportion equation
   87,766.05 : 131,662.74 = 28,587.96 : x
2. Step 2: Convert to fraction form
   87,766.05/131,662.74 = 28,587.96/x
3. Step 3: Cross multiply
   87,766.05x = 131,662.74 × 28,587.96
4. Step 4: Simplify right side
   87,766.05x = 3,763,969,144.61
5. Step 5: Solve for x
   x = 3,763,969,144.61/87,766.05
6. Step 6: Final answer
   x = 42,886.39