Finding the Fourth Proportional to 311,123.16, 429,222.24 and 230,748.48

Step by Step Solution

1. Step 1: Write the proportion equation
   311,123.16 : 429,222.24 = 230,748.48 : x
2. Step 2: Convert to fraction form
   311,123.16/429,222.24 = 230,748.48/x
3. Step 3: Cross multiply
   311,123.16x = 429,222.24 × 230,748.48
4. Step 4: Simplify right side
   311,123.16x = 99,042,379,462.20
5. Step 5: Solve for x
   x = 99,042,379,462.20/311,123.16
6. Step 6: Final answer
   x = 318,338.18