Finding the Fourth Proportional to 31,100.85, 42,919.17 and 16,953.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.85 : 42,919.17 = 16,953.69 : x
2. Step 2: Convert to fraction form
   31,100.85/42,919.17 = 16,953.69/x
3. Step 3: Cross multiply
   31,100.85x = 42,919.17 × 16,953.69
4. Step 4: Simplify right side
   31,100.85x = 727,638,303.24
5. Step 5: Solve for x
   x = 727,638,303.24/31,100.85
6. Step 6: Final answer
   x = 23,396.09