Finding the Fourth Proportional to 79,128, 109,196.64 and 43,800

Step by Step Solution

1. Step 1: Write the proportion equation
   79,128 : 109,196.64 = 43,800 : x
2. Step 2: Convert to fraction form
   79,128/109,196.64 = 43,800/x
3. Step 3: Cross multiply
   79,128x = 109,196.64 × 43,800
4. Step 4: Simplify right side
   79,128x = 4,782,812,832
5. Step 5: Solve for x
   x = 4,782,812,832/79,128
6. Step 6: Final answer
   x = 60,444