Finding the Fourth Proportional to 31,100.48, 42,918.72 and 16,953.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.48 : 42,918.72 = 16,953.32 : x
2. Step 2: Convert to fraction form
   31,100.48/42,918.72 = 16,953.32/x
3. Step 3: Cross multiply
   31,100.48x = 42,918.72 × 16,953.32
4. Step 4: Simplify right side
   31,100.48x = 727,614,794.15
5. Step 5: Solve for x
   x = 727,614,794.15/31,100.48
6. Step 6: Final answer
   x = 23,395.61