Finding the Fourth Proportional to 81,564.78, 122,307.60 and 47,841.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,564.78 : 122,307.60 = 47,841.82 : x
2. Step 2: Convert to fraction form
   81,564.78/122,307.60 = 47,841.82/x
3. Step 3: Cross multiply
   81,564.78x = 122,307.60 × 47,841.82
4. Step 4: Simplify right side
   81,564.78x = 5,851,418,183.83
5. Step 5: Solve for x
   x = 5,851,418,183.83/81,564.78
6. Step 6: Final answer
   x = 71,739.52