Finding the Fourth Proportional to 78,080.94, 107,752.56 and 42,271.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,080.94 : 107,752.56 = 42,271.72 : x
2. Step 2: Convert to fraction form
   78,080.94/107,752.56 = 42,271.72/x
3. Step 3: Cross multiply
   78,080.94x = 107,752.56 × 42,271.72
4. Step 4: Simplify right side
   78,080.94x = 4,554,886,045.60
5. Step 5: Solve for x
   x = 4,554,886,045.60/78,080.94
6. Step 6: Final answer
   x = 58,335.44