Finding the Fourth Proportional to 55,930.97, 77,184.89 and 30,780.47

Step by Step Solution

1. Step 1: Write the proportion equation
   55,930.97 : 77,184.89 = 30,780.47 : x
2. Step 2: Convert to fraction form
   55,930.97/77,184.89 = 30,780.47/x
3. Step 3: Cross multiply
   55,930.97x = 77,184.89 × 30,780.47
4. Step 4: Simplify right side
   55,930.97x = 2,375,786,651.27
5. Step 5: Solve for x
   x = 2,375,786,651.27/55,930.97
6. Step 6: Final answer
   x = 42,477.13