Finding the Fourth Proportional to 31,678.56, 43,715.76 and 17,530.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,678.56 : 43,715.76 = 17,530.56 : x
2. Step 2: Convert to fraction form
   31,678.56/43,715.76 = 17,530.56/x
3. Step 3: Cross multiply
   31,678.56x = 43,715.76 × 17,530.56
4. Step 4: Simplify right side
   31,678.56x = 766,361,753.63
5. Step 5: Solve for x
   x = 766,361,753.63/31,678.56
6. Step 6: Final answer
   x = 24,191.81