Finding the Fourth Proportional to 31,071.52, 42,880.22 and 17,642.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,071.52 : 42,880.22 = 17,642.53 : x
2. Step 2: Convert to fraction form
   31,071.52/42,880.22 = 17,642.53/x
3. Step 3: Cross multiply
   31,071.52x = 42,880.22 × 17,642.53
4. Step 4: Simplify right side
   31,071.52x = 756,515,567.76
5. Step 5: Solve for x
   x = 756,515,567.76/31,071.52
6. Step 6: Final answer
   x = 24,347.56