Finding the Fourth Proportional to 83,446.89, 124,367.49 and 82,118.31

Step by Step Solution

1. Step 1: Write the proportion equation
   83,446.89 : 124,367.49 = 82,118.31 : x
2. Step 2: Convert to fraction form
   83,446.89/124,367.49 = 82,118.31/x
3. Step 3: Cross multiply
   83,446.89x = 124,367.49 × 82,118.31
4. Step 4: Simplify right side
   83,446.89x = 10,212,848,097.74
5. Step 5: Solve for x
   x = 10,212,848,097.74/83,446.89
6. Step 6: Final answer
   x = 122,387.40