Finding the Fourth Proportional to 342,499.82, 472,638.11 and 189,544.46

Step by Step Solution

1. Step 1: Write the proportion equation
   342,499.82 : 472,638.11 = 189,544.46 : x
2. Step 2: Convert to fraction form
   342,499.82/472,638.11 = 189,544.46/x
3. Step 3: Cross multiply
   342,499.82x = 472,638.11 × 189,544.46
4. Step 4: Simplify right side
   342,499.82x = 89,585,932,024.46
5. Step 5: Solve for x
   x = 89,585,932,024.46/342,499.82
6. Step 6: Final answer
   x = 261,564.91