Finding the Fourth Proportional to 87,648.08, 131,388.89 and 28,442.34

Step by Step Solution

1. Step 1: Write the proportion equation
   87,648.08 : 131,388.89 = 28,442.34 : x
2. Step 2: Convert to fraction form
   87,648.08/131,388.89 = 28,442.34/x
3. Step 3: Cross multiply
   87,648.08x = 131,388.89 × 28,442.34
4. Step 4: Simplify right side
   87,648.08x = 3,737,007,339.39
5. Step 5: Solve for x
   x = 3,737,007,339.39/87,648.08
6. Step 6: Final answer
   x = 42,636.50