Finding the Fourth Proportional to 426,123.42, 639,470.25 and 176,805.42

Step by Step Solution

1. Step 1: Write the proportion equation
   426,123.42 : 639,470.25 = 176,805.42 : x
2. Step 2: Convert to fraction form
   426,123.42/639,470.25 = 176,805.42/x
3. Step 3: Cross multiply
   426,123.42x = 639,470.25 × 176,805.42
4. Step 4: Simplify right side
   426,123.42x = 113,061,806,128.76
5. Step 5: Solve for x
   x = 113,061,806,128.76/426,123.42
6. Step 6: Final answer
   x = 265,326.43