Finding the Fourth Proportional to 312,461.69, 431,196.71 and 169,222.30

Step by Step Solution

1. Step 1: Write the proportion equation
   312,461.69 : 431,196.71 = 169,222.30 : x
2. Step 2: Convert to fraction form
   312,461.69/431,196.71 = 169,222.30/x
3. Step 3: Cross multiply
   312,461.69x = 431,196.71 × 169,222.30
4. Step 4: Simplify right side
   312,461.69x = 72,968,097,094.53
5. Step 5: Solve for x
   x = 72,968,097,094.53/312,461.69
6. Step 6: Final answer
   x = 233,526.54