Finding the Fourth Proportional to 78,851.20, 108,810.72 and 43,042.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,851.20 : 108,810.72 = 43,042.72 : x
2. Step 2: Convert to fraction form
   78,851.20/108,810.72 = 43,042.72/x
3. Step 3: Cross multiply
   78,851.20x = 108,810.72 × 43,042.72
4. Step 4: Simplify right side
   78,851.20x = 4,683,509,353.96
5. Step 5: Solve for x
   x = 4,683,509,353.96/78,851.20
6. Step 6: Final answer
   x = 59,396.81