Finding the Fourth Proportional to 28,564,568.42, 39,446,007.81 and 19,886,469.98

Step by Step Solution

1. Step 1: Write the proportion equation
   28,564,568.42 : 39,446,007.81 = 19,886,469.98 : x
2. Step 2: Convert to fraction form
   28,564,568.42/39,446,007.81 = 19,886,469.98/x
3. Step 3: Cross multiply
   28,564,568.42x = 39,446,007.81 × 19,886,469.98
4. Step 4: Simplify right side
   28,564,568.42x = 784,441,850,144,410.62
5. Step 5: Solve for x
   x = 784,441,850,144,410.62/28,564,568.42
6. Step 6: Final answer
   x = 27,462,058.54