Finding the Fourth Proportional to 55,778, 76,974.18 and 30,628.04

Step by Step Solution

1. Step 1: Write the proportion equation
   55,778 : 76,974.18 = 30,628.04 : x
2. Step 2: Convert to fraction form
   55,778/76,974.18 = 30,628.04/x
3. Step 3: Cross multiply
   55,778x = 76,974.18 × 30,628.04
4. Step 4: Simplify right side
   55,778x = 2,357,568,264.01
5. Step 5: Solve for x
   x = 2,357,568,264.01/55,778
6. Step 6: Final answer
   x = 42,266.99