Finding the Fourth Proportional to 59,908.50, 82,479.39 and 47,139.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59,908.50 : 82,479.39 = 47,139.18 : x
2. Step 2: Convert to fraction form
   59,908.50/82,479.39 = 47,139.18/x
3. Step 3: Cross multiply
   59,908.50x = 82,479.39 × 47,139.18
4. Step 4: Simplify right side
   59,908.50x = 3,888,010,811.50
5. Step 5: Solve for x
   x = 3,888,010,811.50/59,908.50
6. Step 6: Final answer
   x = 64,899.15