Finding the Fourth Proportional to 79,378.55, 109,543.69 and 43,571.89

Step by Step Solution

1. Step 1: Write the proportion equation
   79,378.55 : 109,543.69 = 43,571.89 : x
2. Step 2: Convert to fraction form
   79,378.55/109,543.69 = 43,571.89/x
3. Step 3: Cross multiply
   79,378.55x = 109,543.69 × 43,571.89
4. Step 4: Simplify right side
   79,378.55x = 4,773,025,802.27
5. Step 5: Solve for x
   x = 4,773,025,802.27/79,378.55
6. Step 6: Final answer
   x = 60,129.92