Finding the Fourth Proportional to 82,138.56, 123,219.99 and 25,965.92

Step by Step Solution

1. Step 1: Write the proportion equation
   82,138.56 : 123,219.99 = 25,965.92 : x
2. Step 2: Convert to fraction form
   82,138.56/123,219.99 = 25,965.92/x
3. Step 3: Cross multiply
   82,138.56x = 123,219.99 × 25,965.92
4. Step 4: Simplify right side
   82,138.56x = 3,199,520,402.74
5. Step 5: Solve for x
   x = 3,199,520,402.74/82,138.56
6. Step 6: Final answer
   x = 38,952.72