Finding the Fourth Proportional to 31,548.63, 43,448.52 and 30,859.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,548.63 : 43,448.52 = 30,859.73 : x
2. Step 2: Convert to fraction form
   31,548.63/43,448.52 = 30,859.73/x
3. Step 3: Cross multiply
   31,548.63x = 43,448.52 × 30,859.73
4. Step 4: Simplify right side
   31,548.63x = 1,340,809,378.86
5. Step 5: Solve for x
   x = 1,340,809,378.86/31,548.63
6. Step 6: Final answer
   x = 42,499.77