Finding the Fourth Proportional to 42,128.84, 63,192.04 and 17,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.84 : 63,192.04 = 17,162.72 : x
2. Step 2: Convert to fraction form
   42,128.84/63,192.04 = 17,162.72/x
3. Step 3: Cross multiply
   42,128.84x = 63,192.04 × 17,162.72
4. Step 4: Simplify right side
   42,128.84x = 1,084,547,288.75
5. Step 5: Solve for x
   x = 1,084,547,288.75/42,128.84
6. Step 6: Final answer
   x = 25,743.58