Finding the Fourth Proportional to 59,469.30, 82,071.43 and 39,290.78

Step by Step Solution

1. Step 1: Write the proportion equation
   59,469.30 : 82,071.43 = 39,290.78 : x
2. Step 2: Convert to fraction form
   59,469.30/82,071.43 = 39,290.78/x
3. Step 3: Cross multiply
   59,469.30x = 82,071.43 × 39,290.78
4. Step 4: Simplify right side
   59,469.30x = 3,224,650,500.42
5. Step 5: Solve for x
   x = 3,224,650,500.42/59,469.30
6. Step 6: Final answer
   x = 54,223.78