Finding the Fourth Proportional to 82,738.80, 123,780.15 and 71,767.35

Step by Step Solution

1. Step 1: Write the proportion equation
   82,738.80 : 123,780.15 = 71,767.35 : x
2. Step 2: Convert to fraction form
   82,738.80/123,780.15 = 71,767.35/x
3. Step 3: Cross multiply
   82,738.80x = 123,780.15 × 71,767.35
4. Step 4: Simplify right side
   82,738.80x = 8,883,373,348.10
5. Step 5: Solve for x
   x = 8,883,373,348.10/82,738.80
6. Step 6: Final answer
   x = 107,366.48