Finding the Fourth Proportional to 309,141.41, 463,108.42 and 213,061.44

Step by Step Solution

1. Step 1: Write the proportion equation
   309,141.41 : 463,108.42 = 213,061.44 : x
2. Step 2: Convert to fraction form
   309,141.41/463,108.42 = 213,061.44/x
3. Step 3: Cross multiply
   309,141.41x = 463,108.42 × 213,061.44
4. Step 4: Simplify right side
   309,141.41x = 98,670,546,841.32
5. Step 5: Solve for x
   x = 98,670,546,841.32/309,141.41
6. Step 6: Final answer
   x = 319,176.09