Finding the Fourth Proportional to 139,610.52, 209,142.90 and 111,589.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,610.52 : 209,142.90 = 111,589.56 : x
2. Step 2: Convert to fraction form
   139,610.52/209,142.90 = 111,589.56/x
3. Step 3: Cross multiply
   139,610.52x = 209,142.90 × 111,589.56
4. Step 4: Simplify right side
   139,610.52x = 23,338,164,188.12
5. Step 5: Solve for x
   x = 23,338,164,188.12/139,610.52
6. Step 6: Final answer
   x = 167,166.23