Finding the Fourth Proportional to 87,890.23, 131,725.69 and 42,874.48

Step by Step Solution

1. Step 1: Write the proportion equation
   87,890.23 : 131,725.69 = 42,874.48 : x
2. Step 2: Convert to fraction form
   87,890.23/131,725.69 = 42,874.48/x
3. Step 3: Cross multiply
   87,890.23x = 131,725.69 × 42,874.48
4. Step 4: Simplify right side
   87,890.23x = 5,647,670,461.39
5. Step 5: Solve for x
   x = 5,647,670,461.39/87,890.23
6. Step 6: Final answer
   x = 64,258.23