Finding the Fourth Proportional to 42,196.08, 63,256.88 and 15,919.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,196.08 : 63,256.88 = 15,919.28 : x
2. Step 2: Convert to fraction form
   42,196.08/63,256.88 = 15,919.28/x
3. Step 3: Cross multiply
   42,196.08x = 63,256.88 × 15,919.28
4. Step 4: Simplify right side
   42,196.08x = 1,007,003,984.65
5. Step 5: Solve for x
   x = 1,007,003,984.65/42,196.08
6. Step 6: Final answer
   x = 23,864.87