Finding the Fourth Proportional to 63,131.65, 87,131.12 and 40,496.17

Step by Step Solution

1. Step 1: Write the proportion equation
   63,131.65 : 87,131.12 = 40,496.17 : x
2. Step 2: Convert to fraction form
   63,131.65/87,131.12 = 40,496.17/x
3. Step 3: Cross multiply
   63,131.65x = 87,131.12 × 40,496.17
4. Step 4: Simplify right side
   63,131.65x = 3,528,476,647.81
5. Step 5: Solve for x
   x = 3,528,476,647.81/63,131.65
6. Step 6: Final answer
   x = 55,890.77