Finding the Fourth Proportional to 71,118.89, 98,145.99 and 42,455.18

Step by Step Solution

1. Step 1: Write the proportion equation
   71,118.89 : 98,145.99 = 42,455.18 : x
2. Step 2: Convert to fraction form
   71,118.89/98,145.99 = 42,455.18/x
3. Step 3: Cross multiply
   71,118.89x = 98,145.99 × 42,455.18
4. Step 4: Simplify right side
   71,118.89x = 4,166,805,521.65
5. Step 5: Solve for x
   x = 4,166,805,521.65/71,118.89
6. Step 6: Final answer
   x = 58,589.30