Finding the Fourth Proportional to 160,618.76, 240,940.42 and 42,288.38

Step by Step Solution

1. Step 1: Write the proportion equation
   160,618.76 : 240,940.42 = 42,288.38 : x
2. Step 2: Convert to fraction form
   160,618.76/240,940.42 = 42,288.38/x
3. Step 3: Cross multiply
   160,618.76x = 240,940.42 × 42,288.38
4. Step 4: Simplify right side
   160,618.76x = 10,188,978,727.90
5. Step 5: Solve for x
   x = 10,188,978,727.90/160,618.76
6. Step 6: Final answer
   x = 63,435.80