Finding the Fourth Proportional to 78,081.65, 107,751.39 and 42,271.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.65 : 107,751.39 = 42,271.36 : x
2. Step 2: Convert to fraction form
   78,081.65/107,751.39 = 42,271.36/x
3. Step 3: Cross multiply
   78,081.65x = 107,751.39 × 42,271.36
4. Step 4: Simplify right side
   78,081.65x = 4,554,797,797.19
5. Step 5: Solve for x
   x = 4,554,797,797.19/78,081.65
6. Step 6: Final answer
   x = 58,333.78