Finding the Fourth Proportional to 82,558.17, 123,837.21 and 20,228.67

Step by Step Solution

1. Step 1: Write the proportion equation
   82,558.17 : 123,837.21 = 20,228.67 : x
2. Step 2: Convert to fraction form
   82,558.17/123,837.21 = 20,228.67/x
3. Step 3: Cross multiply
   82,558.17x = 123,837.21 × 20,228.67
4. Step 4: Simplify right side
   82,558.17x = 2,505,062,054.81
5. Step 5: Solve for x
   x = 2,505,062,054.81/82,558.17
6. Step 6: Final answer
   x = 30,342.99