Finding the Fourth Proportional to 339,851.74, 509,744.71 and 103,196.47

Step by Step Solution

1. Step 1: Write the proportion equation
   339,851.74 : 509,744.71 = 103,196.47 : x
2. Step 2: Convert to fraction form
   339,851.74/509,744.71 = 103,196.47/x
3. Step 3: Cross multiply
   339,851.74x = 509,744.71 × 103,196.47
4. Step 4: Simplify right side
   339,851.74x = 52,603,854,673.17
5. Step 5: Solve for x
   x = 52,603,854,673.17/339,851.74
6. Step 6: Final answer
   x = 154,784.71