Finding the Fourth Proportional to 31,406.72, 43,340.42 and 17,259.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,406.72 : 43,340.42 = 17,259.58 : x
2. Step 2: Convert to fraction form
   31,406.72/43,340.42 = 17,259.58/x
3. Step 3: Cross multiply
   31,406.72x = 43,340.42 × 17,259.58
4. Step 4: Simplify right side
   31,406.72x = 748,037,446.22
5. Step 5: Solve for x
   x = 748,037,446.22/31,406.72
6. Step 6: Final answer
   x = 23,817.75