Finding the Fourth Proportional to 30,942,747.48, 42,656,646.42 and 21,746,849.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,942,747.48 : 42,656,646.42 = 21,746,849.88 : x
2. Step 2: Convert to fraction form
   30,942,747.48/42,656,646.42 = 21,746,849.88/x
3. Step 3: Cross multiply
   30,942,747.48x = 42,656,646.42 × 21,746,849.88
4. Step 4: Simplify right side
   30,942,747.48x = 927,647,686,079,979.38
5. Step 5: Solve for x
   x = 927,647,686,079,979.38/30,942,747.48
6. Step 6: Final answer
   x = 29,979,486.69