Finding the Fourth Proportional to 31,101.57, 42,920.33 and 16,953.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.57 : 42,920.33 = 16,953.93 : x
2. Step 2: Convert to fraction form
   31,101.57/42,920.33 = 16,953.93/x
3. Step 3: Cross multiply
   31,101.57x = 42,920.33 × 16,953.93
4. Step 4: Simplify right side
   31,101.57x = 727,668,185.63
5. Step 5: Solve for x
   x = 727,668,185.63/31,101.57
6. Step 6: Final answer
   x = 23,396.51