Finding the Fourth Proportional to 137,196.81, 205,290.05 and 82,968.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,196.81 : 205,290.05 = 82,968.10 : x
2. Step 2: Convert to fraction form
   137,196.81/205,290.05 = 82,968.10/x
3. Step 3: Cross multiply
   137,196.81x = 205,290.05 × 82,968.10
4. Step 4: Simplify right side
   137,196.81x = 17,032,524,469.34
5. Step 5: Solve for x
   x = 17,032,524,469.34/137,196.81
6. Step 6: Final answer
   x = 124,146.65