Finding the Fourth Proportional to 78,847.20, 108,805.20 and 43,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,847.20 : 108,805.20 = 43,038.72 : x
2. Step 2: Convert to fraction form
   78,847.20/108,805.20 = 43,038.72/x
3. Step 3: Cross multiply
   78,847.20x = 108,805.20 × 43,038.72
4. Step 4: Simplify right side
   78,847.20x = 4,682,836,537.34
5. Step 5: Solve for x
   x = 4,682,836,537.34/78,847.20
6. Step 6: Final answer
   x = 59,391.29