Finding the Fourth Proportional to 139,058.84, 208,071.55 and 82,929.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,058.84 : 208,071.55 = 82,929.49 : x
2. Step 2: Convert to fraction form
   139,058.84/208,071.55 = 82,929.49/x
3. Step 3: Cross multiply
   139,058.84x = 208,071.55 × 82,929.49
4. Step 4: Simplify right side
   139,058.84x = 17,255,267,108.49
5. Step 5: Solve for x
   x = 17,255,267,108.49/139,058.84
6. Step 6: Final answer
   x = 124,086.08