Finding the Fourth Proportional to 82,781.68, 123,974.88 and 47,647.48

Step by Step Solution

1. Step 1: Write the proportion equation
   82,781.68 : 123,974.88 = 47,647.48 : x
2. Step 2: Convert to fraction form
   82,781.68/123,974.88 = 47,647.48/x
3. Step 3: Cross multiply
   82,781.68x = 123,974.88 × 47,647.48
4. Step 4: Simplify right side
   82,781.68x = 5,907,090,615.30
5. Step 5: Solve for x
   x = 5,907,090,615.30/82,781.68
6. Step 6: Final answer
   x = 71,357.46