Finding the Fourth Proportional to 428,279.38, 591,020.06 and 267,123

Step by Step Solution

1. Step 1: Write the proportion equation
   428,279.38 : 591,020.06 = 267,123 : x
2. Step 2: Convert to fraction form
   428,279.38/591,020.06 = 267,123/x
3. Step 3: Cross multiply
   428,279.38x = 591,020.06 × 267,123
4. Step 4: Simplify right side
   428,279.38x = 157,875,051,487.38
5. Step 5: Solve for x
   x = 157,875,051,487.38/428,279.38
6. Step 6: Final answer
   x = 368,626.32