Finding the Fourth Proportional to 340,284.72, 469,594.20 and 189,381.72

Step by Step Solution

1. Step 1: Write the proportion equation
   340,284.72 : 469,594.20 = 189,381.72 : x
2. Step 2: Convert to fraction form
   340,284.72/469,594.20 = 189,381.72/x
3. Step 3: Cross multiply
   340,284.72x = 469,594.20 × 189,381.72
4. Step 4: Simplify right side
   340,284.72x = 88,932,557,298.02
5. Step 5: Solve for x
   x = 88,932,557,298.02/340,284.72
6. Step 6: Final answer
   x = 261,347.49