Finding the Fourth Proportional to 120,262.82, 180,404.85 and 31,515.98

Step by Step Solution

1. Step 1: Write the proportion equation
   120,262.82 : 180,404.85 = 31,515.98 : x
2. Step 2: Convert to fraction form
   120,262.82/180,404.85 = 31,515.98/x
3. Step 3: Cross multiply
   120,262.82x = 180,404.85 × 31,515.98
4. Step 4: Simplify right side
   120,262.82x = 5,685,635,644.50
5. Step 5: Solve for x
   x = 5,685,635,644.50/120,262.82
6. Step 6: Final answer
   x = 47,276.75