Finding the Fourth Proportional to 144,880.70, 199,977 and 87,510.89

Step by Step Solution

1. Step 1: Write the proportion equation
   144,880.70 : 199,977 = 87,510.89 : x
2. Step 2: Convert to fraction form
   144,880.70/199,977 = 87,510.89/x
3. Step 3: Cross multiply
   144,880.70x = 199,977 × 87,510.89
4. Step 4: Simplify right side
   144,880.70x = 17,500,165,249.53
5. Step 5: Solve for x
   x = 17,500,165,249.53/144,880.70
6. Step 6: Final answer
   x = 120,790.18