Finding the Fourth Proportional to 139,180.50, 208,942.83 and 131,832.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,180.50 : 208,942.83 = 131,832.18 : x
2. Step 2: Convert to fraction form
   139,180.50/208,942.83 = 131,832.18/x
3. Step 3: Cross multiply
   139,180.50x = 208,942.83 × 131,832.18
4. Step 4: Simplify right side
   139,180.50x = 27,545,388,774.27
5. Step 5: Solve for x
   x = 27,545,388,774.27/139,180.50
6. Step 6: Final answer
   x = 197,911.26