Finding the Fourth Proportional to 412,663.55, 569,499.05 and 231,433.34

Step by Step Solution

1. Step 1: Write the proportion equation
   412,663.55 : 569,499.05 = 231,433.34 : x
2. Step 2: Convert to fraction form
   412,663.55/569,499.05 = 231,433.34/x
3. Step 3: Cross multiply
   412,663.55x = 569,499.05 × 231,433.34
4. Step 4: Simplify right side
   412,663.55x = 131,801,064,999.42
5. Step 5: Solve for x
   x = 131,801,064,999.42/412,663.55
6. Step 6: Final answer
   x = 319,391.10