Finding the Fourth Proportional to 55,142.97, 76,101.39 and 30,946.80

Step by Step Solution

1. Step 1: Write the proportion equation
   55,142.97 : 76,101.39 = 30,946.80 : x
2. Step 2: Convert to fraction form
   55,142.97/76,101.39 = 30,946.80/x
3. Step 3: Cross multiply
   55,142.97x = 76,101.39 × 30,946.80
4. Step 4: Simplify right side
   55,142.97x = 2,355,094,496.05
5. Step 5: Solve for x
   x = 2,355,094,496.05/55,142.97
6. Step 6: Final answer
   x = 42,708.88