Finding the Fourth Proportional to 31,564.61, 43,581.18 and 19,633.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,564.61 : 43,581.18 = 19,633.31 : x
2. Step 2: Convert to fraction form
   31,564.61/43,581.18 = 19,633.31/x
3. Step 3: Cross multiply
   31,564.61x = 43,581.18 × 19,633.31
4. Step 4: Simplify right side
   31,564.61x = 855,642,817.11
5. Step 5: Solve for x
   x = 855,642,817.11/31,564.61
6. Step 6: Final answer
   x = 27,107.66