Finding the Fourth Proportional to 55,271.50, 76,274.68 and 30,121

Step by Step Solution

1. Step 1: Write the proportion equation
   55,271.50 : 76,274.68 = 30,121 : x
2. Step 2: Convert to fraction form
   55,271.50/76,274.68 = 30,121/x
3. Step 3: Cross multiply
   55,271.50x = 76,274.68 × 30,121
4. Step 4: Simplify right side
   55,271.50x = 2,297,469,636.28
5. Step 5: Solve for x
   x = 2,297,469,636.28/55,271.50
6. Step 6: Final answer
   x = 41,566.99