Finding the Fourth Proportional to 139,883.72, 209,827.02 and 111,981.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,883.72 : 209,827.02 = 111,981.14 : x
2. Step 2: Convert to fraction form
   139,883.72/209,827.02 = 111,981.14/x
3. Step 3: Cross multiply
   139,883.72x = 209,827.02 × 111,981.14
4. Step 4: Simplify right side
   139,883.72x = 23,496,668,902.40
5. Step 5: Solve for x
   x = 23,496,668,902.40/139,883.72
6. Step 6: Final answer
   x = 167,972.86