Finding the Fourth Proportional to 242,406.06, 363,678.21 and 82,517.10

Step by Step Solution

1. Step 1: Write the proportion equation
   242,406.06 : 363,678.21 = 82,517.10 : x
2. Step 2: Convert to fraction form
   242,406.06/363,678.21 = 82,517.10/x
3. Step 3: Cross multiply
   242,406.06x = 363,678.21 × 82,517.10
4. Step 4: Simplify right side
   242,406.06x = 30,009,671,222.39
5. Step 5: Solve for x
   x = 30,009,671,222.39/242,406.06
6. Step 6: Final answer
   x = 123,799.18