Finding the Fourth Proportional to 431,976.72, 596,123.52 and 238,386

Step by Step Solution

1. Step 1: Write the proportion equation
   431,976.72 : 596,123.52 = 238,386 : x
2. Step 2: Convert to fraction form
   431,976.72/596,123.52 = 238,386/x
3. Step 3: Cross multiply
   431,976.72x = 596,123.52 × 238,386
4. Step 4: Simplify right side
   431,976.72x = 142,107,501,438.72
5. Step 5: Solve for x
   x = 142,107,501,438.72/431,976.72
6. Step 6: Final answer
   x = 328,970.28