Finding the Fourth Proportional to 381,111.86, 524,614.38 and 329,405.42

Step by Step Solution

1. Step 1: Write the proportion equation
   381,111.86 : 524,614.38 = 329,405.42 : x
2. Step 2: Convert to fraction form
   381,111.86/524,614.38 = 329,405.42/x
3. Step 3: Cross multiply
   381,111.86x = 524,614.38 × 329,405.42
4. Step 4: Simplify right side
   381,111.86x = 172,810,820,181.94
5. Step 5: Solve for x
   x = 172,810,820,181.94/381,111.86
6. Step 6: Final answer
   x = 453,438.58