Finding the Fourth Proportional to 131.83, 181.93 and 72.82

Step by Step Solution

1. Step 1: Write the proportion equation
   131.83 : 181.93 = 72.82 : x
2. Step 2: Convert to fraction form
   131.83/181.93 = 72.82/x
3. Step 3: Cross multiply
   131.83x = 181.93 × 72.82
4. Step 4: Simplify right side
   131.83x = 13,247.32
5. Step 5: Solve for x
   x = 13,247.32/131.83
6. Step 6: Final answer
   x = 100.48