Finding the Fourth Proportional to 368,123.20, 552,078.06 and 143,433.52

Step by Step Solution

1. Step 1: Write the proportion equation
   368,123.20 : 552,078.06 = 143,433.52 : x
2. Step 2: Convert to fraction form
   368,123.20/552,078.06 = 143,433.52/x
3. Step 3: Cross multiply
   368,123.20x = 552,078.06 × 143,433.52
4. Step 4: Simplify right side
   368,123.20x = 79,186,499,460.57
5. Step 5: Solve for x
   x = 79,186,499,460.57/368,123.20
6. Step 6: Final answer
   x = 215,108.69