Finding the Fourth Proportional to 30,926,865.72, 42,644,099.82 and 19,748,660.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,926,865.72 : 42,644,099.82 = 19,748,660.38 : x
2. Step 2: Convert to fraction form
   30,926,865.72/42,644,099.82 = 19,748,660.38/x
3. Step 3: Cross multiply
   30,926,865.72x = 42,644,099.82 × 19,748,660.38
4. Step 4: Simplify right side
   30,926,865.72x = 842,163,844,555,999.12
5. Step 5: Solve for x
   x = 842,163,844,555,999.12/30,926,865.72
6. Step 6: Final answer
   x = 27,230,817.77