Finding the Fourth Proportional to 111,640.87, 167,603.46 and 72,362.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,640.87 : 167,603.46 = 72,362.35 : x
2. Step 2: Convert to fraction form
   111,640.87/167,603.46 = 72,362.35/x
3. Step 3: Cross multiply
   111,640.87x = 167,603.46 × 72,362.35
4. Step 4: Simplify right side
   111,640.87x = 12,128,180,233.73
5. Step 5: Solve for x
   x = 12,128,180,233.73/111,640.87
6. Step 6: Final answer
   x = 108,635.67