Finding the Fourth Proportional to 340,443, 469,825.92 and 189,540

Step by Step Solution

1. Step 1: Write the proportion equation
   340,443 : 469,825.92 = 189,540 : x
2. Step 2: Convert to fraction form
   340,443/469,825.92 = 189,540/x
3. Step 3: Cross multiply
   340,443x = 469,825.92 × 189,540
4. Step 4: Simplify right side
   340,443x = 89,050,804,876.80
5. Step 5: Solve for x
   x = 89,050,804,876.80/340,443
6. Step 6: Final answer
   x = 261,573.32