Finding the Fourth Proportional to 31,055.90, 42,858.24 and 16,909.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.90 : 42,858.24 = 16,909.76 : x
2. Step 2: Convert to fraction form
   31,055.90/42,858.24 = 16,909.76/x
3. Step 3: Cross multiply
   31,055.90x = 42,858.24 × 16,909.76
4. Step 4: Simplify right side
   31,055.90x = 724,722,552.42
5. Step 5: Solve for x
   x = 724,722,552.42/31,055.90
6. Step 6: Final answer
   x = 23,336.07