Finding the Fourth Proportional to 55,078.88, 76,007.52 and 30,878.24

Step by Step Solution

1. Step 1: Write the proportion equation
   55,078.88 : 76,007.52 = 30,878.24 : x
2. Step 2: Convert to fraction form
   55,078.88/76,007.52 = 30,878.24/x
3. Step 3: Cross multiply
   55,078.88x = 76,007.52 × 30,878.24
4. Step 4: Simplify right side
   55,078.88x = 2,346,978,444.36
5. Step 5: Solve for x
   x = 2,346,978,444.36/55,078.88
6. Step 6: Final answer
   x = 42,611.22