Finding the Fourth Proportional to 55,139.97, 76,097.25 and 30,943.80

Step by Step Solution

1. Step 1: Write the proportion equation
   55,139.97 : 76,097.25 = 30,943.80 : x
2. Step 2: Convert to fraction form
   55,139.97/76,097.25 = 30,943.80/x
3. Step 3: Cross multiply
   55,139.97x = 76,097.25 × 30,943.80
4. Step 4: Simplify right side
   55,139.97x = 2,354,738,084.55
5. Step 5: Solve for x
   x = 2,354,738,084.55/55,139.97
6. Step 6: Final answer
   x = 42,704.74