Finding the Fourth Proportional to 100.42, 150.16 and 73.08

Step by Step Solution

1. Step 1: Write the proportion equation
   100.42 : 150.16 = 73.08 : x
2. Step 2: Convert to fraction form
   100.42/150.16 = 73.08/x
3. Step 3: Cross multiply
   100.42x = 150.16 × 73.08
4. Step 4: Simplify right side
   100.42x = 10,973.69
5. Step 5: Solve for x
   x = 10,973.69/100.42
6. Step 6: Final answer
   x = 109.28