Finding the Fourth Proportional to 55,151.28, 76,112.56 and 31,279.52

Step by Step Solution

1. Step 1: Write the proportion equation
   55,151.28 : 76,112.56 = 31,279.52 : x
2. Step 2: Convert to fraction form
   55,151.28/76,112.56 = 31,279.52/x
3. Step 3: Cross multiply
   55,151.28x = 76,112.56 × 31,279.52
4. Step 4: Simplify right side
   55,151.28x = 2,380,764,144.02
5. Step 5: Solve for x
   x = 2,380,764,144.02/55,151.28
6. Step 6: Final answer
   x = 43,167.89