Finding the Fourth Proportional to 31,461.48, 43,323.24 and 30,763.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,461.48 : 43,323.24 = 30,763.08 : x
2. Step 2: Convert to fraction form
   31,461.48/43,323.24 = 30,763.08/x
3. Step 3: Cross multiply
   31,461.48x = 43,323.24 × 30,763.08
4. Step 4: Simplify right side
   31,461.48x = 1,332,756,297.98
5. Step 5: Solve for x
   x = 1,332,756,297.98/31,461.48
6. Step 6: Final answer
   x = 42,361.53