Finding the Fourth Proportional to 54,789.48, 82,059.66 and 42,868.96

Step by Step Solution

1. Step 1: Write the proportion equation
   54,789.48 : 82,059.66 = 42,868.96 : x
2. Step 2: Convert to fraction form
   54,789.48/82,059.66 = 42,868.96/x
3. Step 3: Cross multiply
   54,789.48x = 82,059.66 × 42,868.96
4. Step 4: Simplify right side
   54,789.48x = 3,517,812,071.83
5. Step 5: Solve for x
   x = 3,517,812,071.83/54,789.48
6. Step 6: Final answer
   x = 64,205.98