Finding the Fourth Proportional to 80,472, 111,051.36 and 45,144

Step by Step Solution

1. Step 1: Write the proportion equation
   80,472 : 111,051.36 = 45,144 : x
2. Step 2: Convert to fraction form
   80,472/111,051.36 = 45,144/x
3. Step 3: Cross multiply
   80,472x = 111,051.36 × 45,144
4. Step 4: Simplify right side
   80,472x = 5,013,302,595.84
5. Step 5: Solve for x
   x = 5,013,302,595.84/80,472
6. Step 6: Final answer
   x = 62,298.72