Finding the Fourth Proportional to 31,050.39, 42,878.01 and 19,723.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,050.39 : 42,878.01 = 19,723.54 : x
2. Step 2: Convert to fraction form
   31,050.39/42,878.01 = 19,723.54/x
3. Step 3: Cross multiply
   31,050.39x = 42,878.01 × 19,723.54
4. Step 4: Simplify right side
   31,050.39x = 845,705,832.35
5. Step 5: Solve for x
   x = 845,705,832.35/31,050.39
6. Step 6: Final answer
   x = 27,236.56