Finding the Fourth Proportional to 302,739, 417,792.78 and 168,603

Step by Step Solution

1. Step 1: Write the proportion equation
   302,739 : 417,792.78 = 168,603 : x
2. Step 2: Convert to fraction form
   302,739/417,792.78 = 168,603/x
3. Step 3: Cross multiply
   302,739x = 417,792.78 × 168,603
4. Step 4: Simplify right side
   302,739x = 70,441,116,086.34
5. Step 5: Solve for x
   x = 70,441,116,086.34/302,739
6. Step 6: Final answer
   x = 232,679.36