Finding the Fourth Proportional to 173,426.74, 259,895.59 and 82,145.30

Step by Step Solution

1. Step 1: Write the proportion equation
   173,426.74 : 259,895.59 = 82,145.30 : x
2. Step 2: Convert to fraction form
   173,426.74/259,895.59 = 82,145.30/x
3. Step 3: Cross multiply
   173,426.74x = 259,895.59 × 82,145.30
4. Step 4: Simplify right side
   173,426.74x = 21,349,199,704.39
5. Step 5: Solve for x
   x = 21,349,199,704.39/173,426.74
6. Step 6: Final answer
   x = 123,102.12