Finding the Fourth Proportional to 78,680.06, 118,021.31 and 43,841.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,680.06 : 118,021.31 = 43,841.15 : x
2. Step 2: Convert to fraction form
   78,680.06/118,021.31 = 43,841.15/x
3. Step 3: Cross multiply
   78,680.06x = 118,021.31 × 43,841.15
4. Step 4: Simplify right side
   78,680.06x = 5,174,189,145.59
5. Step 5: Solve for x
   x = 5,174,189,145.59/78,680.06
6. Step 6: Final answer
   x = 65,762.40