Finding the Fourth Proportional to 242,676.90, 364,404.15 and 164,139.30

Step by Step Solution

1. Step 1: Write the proportion equation
   242,676.90 : 364,404.15 = 164,139.30 : x
2. Step 2: Convert to fraction form
   242,676.90/364,404.15 = 164,139.30/x
3. Step 3: Cross multiply
   242,676.90x = 364,404.15 × 164,139.30
4. Step 4: Simplify right side
   242,676.90x = 59,813,042,098.10
5. Step 5: Solve for x
   x = 59,813,042,098.10/242,676.90
6. Step 6: Final answer
   x = 246,471.92