Finding the Fourth Proportional to 73,040.42, 109,622.79 and 28,698.18

Step by Step Solution

1. Step 1: Write the proportion equation
   73,040.42 : 109,622.79 = 28,698.18 : x
2. Step 2: Convert to fraction form
   73,040.42/109,622.79 = 28,698.18/x
3. Step 3: Cross multiply
   73,040.42x = 109,622.79 × 28,698.18
4. Step 4: Simplify right side
   73,040.42x = 3,145,974,559.52
5. Step 5: Solve for x
   x = 3,145,974,559.52/73,040.42
6. Step 6: Final answer
   x = 43,071.70