Finding the Fourth Proportional to 87,031.50, 120,103.59 and 49,308.30

Step by Step Solution

1. Step 1: Write the proportion equation
   87,031.50 : 120,103.59 = 49,308.30 : x
2. Step 2: Convert to fraction form
   87,031.50/120,103.59 = 49,308.30/x
3. Step 3: Cross multiply
   87,031.50x = 120,103.59 × 49,308.30
4. Step 4: Simplify right side
   87,031.50x = 5,922,103,846.80
5. Step 5: Solve for x
   x = 5,922,103,846.80/87,031.50
6. Step 6: Final answer
   x = 68,045.52