Finding the Fourth Proportional to 429,665.72, 592,922.22 and 238,691.12

Step by Step Solution

1. Step 1: Write the proportion equation
   429,665.72 : 592,922.22 = 238,691.12 : x
2. Step 2: Convert to fraction form
   429,665.72/592,922.22 = 238,691.12/x
3. Step 3: Cross multiply
   429,665.72x = 592,922.22 × 238,691.12
4. Step 4: Simplify right side
   429,665.72x = 141,525,268,764.69
5. Step 5: Solve for x
   x = 141,525,268,764.69/429,665.72
6. Step 6: Final answer
   x = 329,384.59