Finding the Fourth Proportional to 139,626.15, 209,359.89 and 95,306.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,626.15 : 209,359.89 = 95,306.55 : x
2. Step 2: Convert to fraction form
   139,626.15/209,359.89 = 95,306.55/x
3. Step 3: Cross multiply
   139,626.15x = 209,359.89 × 95,306.55
4. Step 4: Simplify right side
   139,626.15x = 19,953,368,824.28
5. Step 5: Solve for x
   x = 19,953,368,824.28/139,626.15
6. Step 6: Final answer
   x = 142,905.67