Finding the Fourth Proportional to 31,105, 42,924.90 and 19,927

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105 : 42,924.90 = 19,927 : x
2. Step 2: Convert to fraction form
   31,105/42,924.90 = 19,927/x
3. Step 3: Cross multiply
   31,105x = 42,924.90 × 19,927
4. Step 4: Simplify right side
   31,105x = 855,364,482.30
5. Step 5: Solve for x
   x = 855,364,482.30/31,105
6. Step 6: Final answer
   x = 27,499.26