Finding the Fourth Proportional to 173,085.20, 242,669.20 and 173,085.20

Step by Step Solution

1. Step 1: Write the proportion equation
   173,085.20 : 242,669.20 = 173,085.20 : x
2. Step 2: Convert to fraction form
   173,085.20/242,669.20 = 173,085.20/x
3. Step 3: Cross multiply
   173,085.20x = 242,669.20 × 173,085.20
4. Step 4: Simplify right side
   173,085.20x = 42,002,447,015.84
5. Step 5: Solve for x
   x = 42,002,447,015.84/173,085.20
6. Step 6: Final answer
   x = 242,669.20