Finding the Fourth Proportional to 103,992.36, 143,510.72 and 63,144.87

Step by Step Solution

1. Step 1: Write the proportion equation
   103,992.36 : 143,510.72 = 63,144.87 : x
2. Step 2: Convert to fraction form
   103,992.36/143,510.72 = 63,144.87/x
3. Step 3: Cross multiply
   103,992.36x = 143,510.72 × 63,144.87
4. Step 4: Simplify right side
   103,992.36x = 9,061,965,442.28
5. Step 5: Solve for x
   x = 9,061,965,442.28/103,992.36
6. Step 6: Final answer
   x = 87,140.68