Finding the Fourth Proportional to 79,621.57, 109,841.02 and 51,336.37

Step by Step Solution

1. Step 1: Write the proportion equation
   79,621.57 : 109,841.02 = 51,336.37 : x
2. Step 2: Convert to fraction form
   79,621.57/109,841.02 = 51,336.37/x
3. Step 3: Cross multiply
   79,621.57x = 109,841.02 × 51,336.37
4. Step 4: Simplify right side
   79,621.57x = 5,638,839,243.90
5. Step 5: Solve for x
   x = 5,638,839,243.90/79,621.57
6. Step 6: Final answer
   x = 70,820.50