Finding the Fourth Proportional to 82,015.84, 123,023.76 and 19,686.34

Step by Step Solution

1. Step 1: Write the proportion equation
   82,015.84 : 123,023.76 = 19,686.34 : x
2. Step 2: Convert to fraction form
   82,015.84/123,023.76 = 19,686.34/x
3. Step 3: Cross multiply
   82,015.84x = 123,023.76 × 19,686.34
4. Step 4: Simplify right side
   82,015.84x = 2,421,886,853.89
5. Step 5: Solve for x
   x = 2,421,886,853.89/82,015.84
6. Step 6: Final answer
   x = 29,529.50