Finding the Fourth Proportional to 367,066.80, 550,436.17 and 142,352.55

Step by Step Solution

1. Step 1: Write the proportion equation
   367,066.80 : 550,436.17 = 142,352.55 : x
2. Step 2: Convert to fraction form
   367,066.80/550,436.17 = 142,352.55/x
3. Step 3: Cross multiply
   367,066.80x = 550,436.17 × 142,352.55
4. Step 4: Simplify right side
   367,066.80x = 78,355,992,411.73
5. Step 5: Solve for x
   x = 78,355,992,411.73/367,066.80
6. Step 6: Final answer
   x = 213,465.21