Finding the Fourth Proportional to 139,059.84, 208,073.05 and 82,930.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,059.84 : 208,073.05 = 82,930.49 : x
2. Step 2: Convert to fraction form
   139,059.84/208,073.05 = 82,930.49/x
3. Step 3: Cross multiply
   139,059.84x = 208,073.05 × 82,930.49
4. Step 4: Simplify right side
   139,059.84x = 17,255,599,992.29
5. Step 5: Solve for x
   x = 17,255,599,992.29/139,059.84
6. Step 6: Final answer
   x = 124,087.59