Finding the Fourth Proportional to 139,839.68, 209,678.52 and 95,519.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,839.68 : 209,678.52 = 95,519.99 : x
2. Step 2: Convert to fraction form
   139,839.68/209,678.52 = 95,519.99/x
3. Step 3: Cross multiply
   139,839.68x = 209,678.52 × 95,519.99
4. Step 4: Simplify right side
   139,839.68x = 20,028,491,016.01
5. Step 5: Solve for x
   x = 20,028,491,016.01/139,839.68
6. Step 6: Final answer
   x = 143,224.66