Finding the Fourth Proportional to 221,196.65, 305,247.69 and 123,076.22

Step by Step Solution

1. Step 1: Write the proportion equation
   221,196.65 : 305,247.69 = 123,076.22 : x
2. Step 2: Convert to fraction form
   221,196.65/305,247.69 = 123,076.22/x
3. Step 3: Cross multiply
   221,196.65x = 305,247.69 × 123,076.22
4. Step 4: Simplify right side
   221,196.65x = 37,568,730,322.69
5. Step 5: Solve for x
   x = 37,568,730,322.69/221,196.65
6. Step 6: Final answer
   x = 169,843.13