Finding the Fourth Proportional to 267,144, 368,658.72 and 153,974.04

Step by Step Solution

1. Step 1: Write the proportion equation
   267,144 : 368,658.72 = 153,974.04 : x
2. Step 2: Convert to fraction form
   267,144/368,658.72 = 153,974.04/x
3. Step 3: Cross multiply
   267,144x = 368,658.72 × 153,974.04
4. Step 4: Simplify right side
   267,144x = 56,763,872,499.63
5. Step 5: Solve for x
   x = 56,763,872,499.63/267,144
6. Step 6: Final answer
   x = 212,484.18