Finding the Fourth Proportional to 119.51, 164.88 and 72.86

Step by Step Solution

1. Step 1: Write the proportion equation
   119.51 : 164.88 = 72.86 : x
2. Step 2: Convert to fraction form
   119.51/164.88 = 72.86/x
3. Step 3: Cross multiply
   119.51x = 164.88 × 72.86
4. Step 4: Simplify right side
   119.51x = 12,012.33
5. Step 5: Solve for x
   x = 12,012.33/119.51
6. Step 6: Final answer
   x = 100.52