Finding the Fourth Proportional to 368,648.04, 552,086.33 and 210,396.72

Step by Step Solution

1. Step 1: Write the proportion equation
   368,648.04 : 552,086.33 = 210,396.72 : x
2. Step 2: Convert to fraction form
   368,648.04/552,086.33 = 210,396.72/x
3. Step 3: Cross multiply
   368,648.04x = 552,086.33 × 210,396.72
4. Step 4: Simplify right side
   368,648.04x = 116,157,151,936.85
5. Step 5: Solve for x
   x = 116,157,151,936.85/368,648.04
6. Step 6: Final answer
   x = 315,089.57