Finding the Fourth Proportional to 99.83, 137.79 and 68.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 137.79 = 68.82 : x
2. Step 2: Convert to fraction form
   99.83/137.79 = 68.82/x
3. Step 3: Cross multiply
   99.83x = 137.79 × 68.82
4. Step 4: Simplify right side
   99.83x = 9,483.31
5. Step 5: Solve for x
   x = 9,483.31/99.83
6. Step 6: Final answer
   x = 95.00