Finding the Fourth Proportional to 31,099.67, 42,917.52 and 16,953.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,099.67 : 42,917.52 = 16,953.42 : x
2. Step 2: Convert to fraction form
   31,099.67/42,917.52 = 16,953.42/x
3. Step 3: Cross multiply
   31,099.67x = 42,917.52 × 16,953.42
4. Step 4: Simplify right side
   31,099.67x = 727,598,741.92
5. Step 5: Solve for x
   x = 727,598,741.92/31,099.67
6. Step 6: Final answer
   x = 23,395.71