Finding the Fourth Proportional to 71,109, 98,130.42 and 42,815.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,109 : 98,130.42 = 42,815.88 : x
2. Step 2: Convert to fraction form
   71,109/98,130.42 = 42,815.88/x
3. Step 3: Cross multiply
   71,109x = 98,130.42 × 42,815.88
4. Step 4: Simplify right side
   71,109x = 4,201,540,287.07
5. Step 5: Solve for x
   x = 4,201,540,287.07/71,109
6. Step 6: Final answer
   x = 59,085.91