Finding the Fourth Proportional to 100.29, 138.43 and 69.37

Step by Step Solution

1. Step 1: Write the proportion equation
   100.29 : 138.43 = 69.37 : x
2. Step 2: Convert to fraction form
   100.29/138.43 = 69.37/x
3. Step 3: Cross multiply
   100.29x = 138.43 × 69.37
4. Step 4: Simplify right side
   100.29x = 9,602.89
5. Step 5: Solve for x
   x = 9,602.89/100.29
6. Step 6: Final answer
   x = 95.75