Finding the Fourth Proportional to 93.34, 139.60 and 72.82

Step by Step Solution

1. Step 1: Write the proportion equation
   93.34 : 139.60 = 72.82 : x
2. Step 2: Convert to fraction form
   93.34/139.60 = 72.82/x
3. Step 3: Cross multiply
   93.34x = 139.60 × 72.82
4. Step 4: Simplify right side
   93.34x = 10,165.67
5. Step 5: Solve for x
   x = 10,165.67/93.34
6. Step 6: Final answer
   x = 108.91