Finding the Fourth Proportional to 99.82, 137.31 and 93.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99.82 : 137.31 = 93.34 : x
2. Step 2: Convert to fraction form
   99.82/137.31 = 93.34/x
3. Step 3: Cross multiply
   99.82x = 137.31 × 93.34
4. Step 4: Simplify right side
   99.82x = 12,816.52
5. Step 5: Solve for x
   x = 12,816.52/99.82
6. Step 6: Final answer
   x = 128.40