Finding the Fourth Proportional to 405,016.61, 559,082.25 and 267,173.64

Step by Step Solution

1. Step 1: Write the proportion equation
   405,016.61 : 559,082.25 = 267,173.64 : x
2. Step 2: Convert to fraction form
   405,016.61/559,082.25 = 267,173.64/x
3. Step 3: Cross multiply
   405,016.61x = 559,082.25 × 267,173.64
4. Step 4: Simplify right side
   405,016.61x = 149,372,039,791.89
5. Step 5: Solve for x
   x = 149,372,039,791.89/405,016.61
6. Step 6: Final answer
   x = 368,804.73