Finding the Fourth Proportional to 31,071.69, 42,877.40 and 17,641.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,071.69 : 42,877.40 = 17,641.17 : x
2. Step 2: Convert to fraction form
   31,071.69/42,877.40 = 17,641.17/x
3. Step 3: Cross multiply
   31,071.69x = 42,877.40 × 17,641.17
4. Step 4: Simplify right side
   31,071.69x = 756,407,414.35
5. Step 5: Solve for x
   x = 756,407,414.35/31,071.69
6. Step 6: Final answer
   x = 24,343.94