Finding the Fourth Proportional to 59,780.61, 82,475.69 and 39,647.25

Step by Step Solution

1. Step 1: Write the proportion equation
   59,780.61 : 82,475.69 = 39,647.25 : x
2. Step 2: Convert to fraction form
   59,780.61/82,475.69 = 39,647.25/x
3. Step 3: Cross multiply
   59,780.61x = 82,475.69 × 39,647.25
4. Step 4: Simplify right side
   59,780.61x = 3,269,934,102.12
5. Step 5: Solve for x
   x = 3,269,934,102.12/59,780.61
6. Step 6: Final answer
   x = 54,698.91