Finding the Fourth Proportional to 82,715.80, 123,936.90 and 47,594.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82,715.80 : 123,936.90 = 47,594.20 : x
2. Step 2: Convert to fraction form
   82,715.80/123,936.90 = 47,594.20/x
3. Step 3: Cross multiply
   82,715.80x = 123,936.90 × 47,594.20
4. Step 4: Simplify right side
   82,715.80x = 5,898,677,605.98
5. Step 5: Solve for x
   x = 5,898,677,605.98/82,715.80
6. Step 6: Final answer
   x = 71,312.59