Finding the Fourth Proportional to 225,196.42, 310,766.26 and 123,221.47

Step by Step Solution

1. Step 1: Write the proportion equation
   225,196.42 : 310,766.26 = 123,221.47 : x
2. Step 2: Convert to fraction form
   225,196.42/310,766.26 = 123,221.47/x
3. Step 3: Cross multiply
   225,196.42x = 310,766.26 × 123,221.47
4. Step 4: Simplify right side
   225,196.42x = 38,293,075,383.60
5. Step 5: Solve for x
   x = 38,293,075,383.60/225,196.42
6. Step 6: Final answer
   x = 170,043.00