Finding the Fourth Proportional to 30,774.15, 42,493.59 and 19,461.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,774.15 : 42,493.59 = 19,461.96 : x
2. Step 2: Convert to fraction form
   30,774.15/42,493.59 = 19,461.96/x
3. Step 3: Cross multiply
   30,774.15x = 42,493.59 × 19,461.96
4. Step 4: Simplify right side
   30,774.15x = 827,008,548.84
5. Step 5: Solve for x
   x = 827,008,548.84/30,774.15
6. Step 6: Final answer
   x = 26,873.48