Finding the Fourth Proportional to 80,620.72, 120,983.74 and 30,701.30

Step by Step Solution

1. Step 1: Write the proportion equation
   80,620.72 : 120,983.74 = 30,701.30 : x
2. Step 2: Convert to fraction form
   80,620.72/120,983.74 = 30,701.30/x
3. Step 3: Cross multiply
   80,620.72x = 120,983.74 × 30,701.30
4. Step 4: Simplify right side
   80,620.72x = 3,714,357,587.88
5. Step 5: Solve for x
   x = 3,714,357,587.88/80,620.72
6. Step 6: Final answer
   x = 46,072.00