Finding the Fourth Proportional to 42,987,308.37, 64,421,306.62 and 19,586,863.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,987,308.37 : 64,421,306.62 = 19,586,863.69 : x
2. Step 2: Convert to fraction form
   42,987,308.37/64,421,306.62 = 19,586,863.69/x
3. Step 3: Cross multiply
   42,987,308.37x = 64,421,306.62 × 19,586,863.69
4. Step 4: Simplify right side
   42,987,308.37x = 1,261,811,351,175,528
5. Step 5: Solve for x
   x = 1,261,811,351,175,528/42,987,308.37
6. Step 6: Final answer
   x = 29,353,113.73