Finding the Fourth Proportional to 143,093.38, 214,639.89 and 54,346.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,093.38 : 214,639.89 = 54,346.72 : x
2. Step 2: Convert to fraction form
   143,093.38/214,639.89 = 54,346.72/x
3. Step 3: Cross multiply
   143,093.38x = 214,639.89 × 54,346.72
4. Step 4: Simplify right side
   143,093.38x = 11,664,974,002.66
5. Step 5: Solve for x
   x = 11,664,974,002.66/143,093.38
6. Step 6: Final answer
   x = 81,520.01