Finding the Fourth Proportional to 42,799,868.10, 64,204,673.49 and 15,519,009.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,799,868.10 : 64,204,673.49 = 15,519,009.78 : x
2. Step 2: Convert to fraction form
   42,799,868.10/64,204,673.49 = 15,519,009.78/x
3. Step 3: Cross multiply
   42,799,868.10x = 64,204,673.49 × 15,519,009.78
4. Step 4: Simplify right side
   42,799,868.10x = 996,392,955,813,016.75
5. Step 5: Solve for x
   x = 996,392,955,813,016.75/42,799,868.10
6. Step 6: Final answer
   x = 23,280,280.99