Finding the Fourth Proportional to 342,131.55, 472,175.12 and 189,205.57

Step by Step Solution

1. Step 1: Write the proportion equation
   342,131.55 : 472,175.12 = 189,205.57 : x
2. Step 2: Convert to fraction form
   342,131.55/472,175.12 = 189,205.57/x
3. Step 3: Cross multiply
   342,131.55x = 472,175.12 × 189,205.57
4. Step 4: Simplify right side
   342,131.55x = 89,338,163,782.65
5. Step 5: Solve for x
   x = 89,338,163,782.65/342,131.55
6. Step 6: Final answer
   x = 261,122.26