Finding the Fourth Proportional to 342,182.61, 472,215.05 and 189,231.09

Step by Step Solution

1. Step 1: Write the proportion equation
   342,182.61 : 472,215.05 = 189,231.09 : x
2. Step 2: Convert to fraction form
   342,182.61/472,215.05 = 189,231.09/x
3. Step 3: Cross multiply
   342,182.61x = 472,215.05 × 189,231.09
4. Step 4: Simplify right side
   342,182.61x = 89,357,769,098.98
5. Step 5: Solve for x
   x = 89,357,769,098.98/342,182.61
6. Step 6: Final answer
   x = 261,140.59