Finding the Fourth Proportional to 105.01, 145.01 and 74.00

Step by Step Solution

1. Step 1: Write the proportion equation
   105.01 : 145.01 = 74.00 : x
2. Step 2: Convert to fraction form
   105.01/145.01 = 74.00/x
3. Step 3: Cross multiply
   105.01x = 145.01 × 74.00
4. Step 4: Simplify right side
   105.01x = 10,730.06
5. Step 5: Solve for x
   x = 10,730.06/105.01
6. Step 6: Final answer
   x = 102.18