Finding the Fourth Proportional to 87,499.80, 131,270.49 and 28,335.42

Step by Step Solution

1. Step 1: Write the proportion equation
   87,499.80 : 131,270.49 = 28,335.42 : x
2. Step 2: Convert to fraction form
   87,499.80/131,270.49 = 28,335.42/x
3. Step 3: Cross multiply
   87,499.80x = 131,270.49 × 28,335.42
4. Step 4: Simplify right side
   87,499.80x = 3,719,604,467.76
5. Step 5: Solve for x
   x = 3,719,604,467.76/87,499.80
6. Step 6: Final answer
   x = 42,509.86