Finding the Fourth Proportional to 143,977.50, 198,710.82 and 87,377.94

Step by Step Solution

1. Step 1: Write the proportion equation
   143,977.50 : 198,710.82 = 87,377.94 : x
2. Step 2: Convert to fraction form
   143,977.50/198,710.82 = 87,377.94/x
3. Step 3: Cross multiply
   143,977.50x = 198,710.82 × 87,377.94
4. Step 4: Simplify right side
   143,977.50x = 17,362,942,107.31
5. Step 5: Solve for x
   x = 17,362,942,107.31/143,977.50
6. Step 6: Final answer
   x = 120,594.83