Finding the Fourth Proportional to 339,970.59, 469,159.89 and 189,067.59

Step by Step Solution

1. Step 1: Write the proportion equation
   339,970.59 : 469,159.89 = 189,067.59 : x
2. Step 2: Convert to fraction form
   339,970.59/469,159.89 = 189,067.59/x
3. Step 3: Cross multiply
   339,970.59x = 469,159.89 × 189,067.59
4. Step 4: Simplify right side
   339,970.59x = 88,702,929,726.97
5. Step 5: Solve for x
   x = 88,702,929,726.97/339,970.59
6. Step 6: Final answer
   x = 260,913.54