Finding the Fourth Proportional to 79,189.47, 109,281.50 and 43,380.78

Step by Step Solution

1. Step 1: Write the proportion equation
   79,189.47 : 109,281.50 = 43,380.78 : x
2. Step 2: Convert to fraction form
   79,189.47/109,281.50 = 43,380.78/x
3. Step 3: Cross multiply
   79,189.47x = 109,281.50 × 43,380.78
4. Step 4: Simplify right side
   79,189.47x = 4,740,716,709.57
5. Step 5: Solve for x
   x = 4,740,716,709.57/79,189.47
6. Step 6: Final answer
   x = 59,865.49