Finding the Fourth Proportional to 139,882.06, 209,821.47 and 83,737.81

Step by Step Solution

1. Step 1: Write the proportion equation
   139,882.06 : 209,821.47 = 83,737.81 : x
2. Step 2: Convert to fraction form
   139,882.06/209,821.47 = 83,737.81/x
3. Step 3: Cross multiply
   139,882.06x = 209,821.47 × 83,737.81
4. Step 4: Simplify right side
   139,882.06x = 17,569,990,388.78
5. Step 5: Solve for x
   x = 17,569,990,388.78/139,882.06
6. Step 6: Final answer
   x = 125,605.75