Finding the Fourth Proportional to 78,080.70, 107,751.33 and 42,270.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,080.70 : 107,751.33 = 42,270.69 : x
2. Step 2: Convert to fraction form
   78,080.70/107,751.33 = 42,270.69/x
3. Step 3: Cross multiply
   78,080.70x = 107,751.33 × 42,270.69
4. Step 4: Simplify right side
   78,080.70x = 4,554,723,067.52
5. Step 5: Solve for x
   x = 4,554,723,067.52/78,080.70
6. Step 6: Final answer
   x = 58,333.53