Finding the Fourth Proportional to 100.94, 139.23 and 75.02

Step by Step Solution

1. Step 1: Write the proportion equation
   100.94 : 139.23 = 75.02 : x
2. Step 2: Convert to fraction form
   100.94/139.23 = 75.02/x
3. Step 3: Cross multiply
   100.94x = 139.23 × 75.02
4. Step 4: Simplify right side
   100.94x = 10,445.03
5. Step 5: Solve for x
   x = 10,445.03/100.94
6. Step 6: Final answer
   x = 103.48