Finding the Fourth Proportional to 429,386.10, 592,571.31 and 238,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,386.10 : 592,571.31 = 238,399.50 : x
2. Step 2: Convert to fraction form
   429,386.10/592,571.31 = 238,399.50/x
3. Step 3: Cross multiply
   429,386.10x = 592,571.31 × 238,399.50
4. Step 4: Simplify right side
   429,386.10x = 141,268,704,018.35
5. Step 5: Solve for x
   x = 141,268,704,018.35/429,386.10
6. Step 6: Final answer
   x = 329,001.58