Finding the Fourth Proportional to 42,767.62, 64,155.02 and 15,757.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,767.62 : 64,155.02 = 15,757.31 : x
2. Step 2: Convert to fraction form
   42,767.62/64,155.02 = 15,757.31/x
3. Step 3: Cross multiply
   42,767.62x = 64,155.02 × 15,757.31
4. Step 4: Simplify right side
   42,767.62x = 1,010,910,619.80
5. Step 5: Solve for x
   x = 1,010,910,619.80/42,767.62
6. Step 6: Final answer
   x = 23,637.29