Finding the Fourth Proportional to 78,081.10, 107,751.93 and 42,271.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.10 : 107,751.93 = 42,271.40 : x
2. Step 2: Convert to fraction form
   78,081.10/107,751.93 = 42,271.40/x
3. Step 3: Cross multiply
   78,081.10x = 107,751.93 × 42,271.40
4. Step 4: Simplify right side
   78,081.10x = 4,554,825,203.18
5. Step 5: Solve for x
   x = 4,554,825,203.18/78,081.10
6. Step 6: Final answer
   x = 58,334.54