Finding the Fourth Proportional to 40,678.06, 60,906.12 and 30,787.42

Step by Step Solution

1. Step 1: Write the proportion equation
   40,678.06 : 60,906.12 = 30,787.42 : x
2. Step 2: Convert to fraction form
   40,678.06/60,906.12 = 30,787.42/x
3. Step 3: Cross multiply
   40,678.06x = 60,906.12 × 30,787.42
4. Step 4: Simplify right side
   40,678.06x = 1,875,142,297.01
5. Step 5: Solve for x
   x = 1,875,142,297.01/40,678.06
6. Step 6: Final answer
   x = 46,097.14