Finding the Fourth Proportional to 71,078.06, 106,678.49 and 28,981.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,078.06 : 106,678.49 = 28,981.34 : x
2. Step 2: Convert to fraction form
   71,078.06/106,678.49 = 28,981.34/x
3. Step 3: Cross multiply
   71,078.06x = 106,678.49 × 28,981.34
4. Step 4: Simplify right side
   71,078.06x = 3,091,686,155.72
5. Step 5: Solve for x
   x = 3,091,686,155.72/71,078.06
6. Step 6: Final answer
   x = 43,497.06