Finding the Fourth Proportional to 55,821.55, 77,034.61 and 30,328.42

Step by Step Solution

1. Step 1: Write the proportion equation
   55,821.55 : 77,034.61 = 30,328.42 : x
2. Step 2: Convert to fraction form
   55,821.55/77,034.61 = 30,328.42/x
3. Step 3: Cross multiply
   55,821.55x = 77,034.61 × 30,328.42
4. Step 4: Simplify right side
   55,821.55x = 2,336,337,469.80
5. Step 5: Solve for x
   x = 2,336,337,469.80/55,821.55
6. Step 6: Final answer
   x = 41,853.69