Finding the Fourth Proportional to 55,325.50, 82,945.71 and 28,642.88

Step by Step Solution

1. Step 1: Write the proportion equation
   55,325.50 : 82,945.71 = 28,642.88 : x
2. Step 2: Convert to fraction form
   55,325.50/82,945.71 = 28,642.88/x
3. Step 3: Cross multiply
   55,325.50x = 82,945.71 × 28,642.88
4. Step 4: Simplify right side
   55,325.50x = 2,375,804,225.41
5. Step 5: Solve for x
   x = 2,375,804,225.41/55,325.50
6. Step 6: Final answer
   x = 42,942.30