Finding the Fourth Proportional to 80,603, 111,281.70 and 51,972.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,603 : 111,281.70 = 51,972.12 : x
2. Step 2: Convert to fraction form
   80,603/111,281.70 = 51,972.12/x
3. Step 3: Cross multiply
   80,603x = 111,281.70 × 51,972.12
4. Step 4: Simplify right side
   80,603x = 5,783,545,866.20
5. Step 5: Solve for x
   x = 5,783,545,866.20/80,603
6. Step 6: Final answer
   x = 71,753.48