Finding the Fourth Proportional to 78,079.94, 107,751.18 and 42,270.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,079.94 : 107,751.18 = 42,270.72 : x
2. Step 2: Convert to fraction form
   78,079.94/107,751.18 = 42,270.72/x
3. Step 3: Cross multiply
   78,079.94x = 107,751.18 × 42,270.72
4. Step 4: Simplify right side
   78,079.94x = 4,554,719,959.45
5. Step 5: Solve for x
   x = 4,554,719,959.45/78,079.94
6. Step 6: Final answer
   x = 58,334.06