Finding the Fourth Proportional to 81,447.98, 122,086.71 and 34,090.20

Step by Step Solution

1. Step 1: Write the proportion equation
   81,447.98 : 122,086.71 = 34,090.20 : x
2. Step 2: Convert to fraction form
   81,447.98/122,086.71 = 34,090.20/x
3. Step 3: Cross multiply
   81,447.98x = 122,086.71 × 34,090.20
4. Step 4: Simplify right side
   81,447.98x = 4,161,960,361.24
5. Step 5: Solve for x
   x = 4,161,960,361.24/81,447.98
6. Step 6: Final answer
   x = 51,099.62