Finding the Fourth Proportional to 138,967.34, 208,729.94 and 82,916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   138,967.34 : 208,729.94 = 82,916.82 : x
2. Step 2: Convert to fraction form
   138,967.34/208,729.94 = 82,916.82/x
3. Step 3: Cross multiply
   138,967.34x = 208,729.94 × 82,916.82
4. Step 4: Simplify right side
   138,967.34x = 17,307,222,449.01
5. Step 5: Solve for x
   x = 17,307,222,449.01/138,967.34
6. Step 6: Final answer
   x = 124,541.66