Finding the Fourth Proportional to 78,081.69, 107,752.76 and 42,271.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.69 : 107,752.76 = 42,271.71 : x
2. Step 2: Convert to fraction form
   78,081.69/107,752.76 = 42,271.71/x
3. Step 3: Cross multiply
   78,081.69x = 107,752.76 × 42,271.71
4. Step 4: Simplify right side
   78,081.69x = 4,554,893,203.29
5. Step 5: Solve for x
   x = 4,554,893,203.29/78,081.69
6. Step 6: Final answer
   x = 58,334.97