Finding the Fourth Proportional to 99.56, 149.31 and 69.14

Step by Step Solution

1. Step 1: Write the proportion equation
   99.56 : 149.31 = 69.14 : x
2. Step 2: Convert to fraction form
   99.56/149.31 = 69.14/x
3. Step 3: Cross multiply
   99.56x = 149.31 × 69.14
4. Step 4: Simplify right side
   99.56x = 10,322.55
5. Step 5: Solve for x
   x = 10,322.55/99.56
6. Step 6: Final answer
   x = 103.69