Finding the Fourth Proportional to 333,389.69, 500,128.47 and 108,671.39

Step by Step Solution

1. Step 1: Write the proportion equation
   333,389.69 : 500,128.47 = 108,671.39 : x
2. Step 2: Convert to fraction form
   333,389.69/500,128.47 = 108,671.39/x
3. Step 3: Cross multiply
   333,389.69x = 500,128.47 × 108,671.39
4. Step 4: Simplify right side
   333,389.69x = 54,349,656,013.47
5. Step 5: Solve for x
   x = 54,349,656,013.47/333,389.69
6. Step 6: Final answer
   x = 163,021.41