Finding the Fourth Proportional to 72.94, 100.73 and 51.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72.94 : 100.73 = 51.07 : x
2. Step 2: Convert to fraction form
   72.94/100.73 = 51.07/x
3. Step 3: Cross multiply
   72.94x = 100.73 × 51.07
4. Step 4: Simplify right side
   72.94x = 5,144.28
5. Step 5: Solve for x
   x = 5,144.28/72.94
6. Step 6: Final answer
   x = 70.53