Finding the Fourth Proportional to 31,100.39, 42,918.53 and 16,953.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.39 : 42,918.53 = 16,953.23 : x
2. Step 2: Convert to fraction form
   31,100.39/42,918.53 = 16,953.23/x
3. Step 3: Cross multiply
   31,100.39x = 42,918.53 × 16,953.23
4. Step 4: Simplify right side
   31,100.39x = 727,607,710.35
5. Step 5: Solve for x
   x = 727,607,710.35/31,100.39
6. Step 6: Final answer
   x = 23,395.45