Finding the Fourth Proportional to 51,045.56, 70,442.82 and 28,689.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51,045.56 : 70,442.82 = 28,689.56 : x
2. Step 2: Convert to fraction form
   51,045.56/70,442.82 = 28,689.56/x
3. Step 3: Cross multiply
   51,045.56x = 70,442.82 × 28,689.56
4. Step 4: Simplify right side
   51,045.56x = 2,020,973,510.96
5. Step 5: Solve for x
   x = 2,020,973,510.96/51,045.56
6. Step 6: Final answer
   x = 39,591.56