Finding the Fourth Proportional to 30,699,986.05, 42,385,100.54 and 19,542,774.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,699,986.05 : 42,385,100.54 = 19,542,774.38 : x
2. Step 2: Convert to fraction form
   30,699,986.05/42,385,100.54 = 19,542,774.38/x
3. Step 3: Cross multiply
   30,699,986.05x = 42,385,100.54 × 19,542,774.38
4. Step 4: Simplify right side
   30,699,986.05x = 828,322,456,772,016.62
5. Step 5: Solve for x
   x = 828,322,456,772,016.62/30,699,986.05
6. Step 6: Final answer
   x = 26,981,199.78