Finding the Fourth Proportional to 123.10, 174.93 and 123.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123.10 : 174.93 = 123.10 : x
2. Step 2: Convert to fraction form
   123.10/174.93 = 123.10/x
3. Step 3: Cross multiply
   123.10x = 174.93 × 123.10
4. Step 4: Simplify right side
   123.10x = 21,533.88
5. Step 5: Solve for x
   x = 21,533.88/123.10
6. Step 6: Final answer
   x = 174.93