Finding the Fourth Proportional to 82,951.17, 124,426.69 and 20,621.67

Step by Step Solution

1. Step 1: Write the proportion equation
   82,951.17 : 124,426.69 = 20,621.67 : x
2. Step 2: Convert to fraction form
   82,951.17/124,426.69 = 20,621.67/x
3. Step 3: Cross multiply
   82,951.17x = 124,426.69 × 20,621.67
4. Step 4: Simplify right side
   82,951.17x = 2,565,886,140.37
5. Step 5: Solve for x
   x = 2,565,886,140.37/82,951.17
6. Step 6: Final answer
   x = 30,932.49