Finding the Fourth Proportional to 123.59, 185.10 and 100.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123.59 : 185.10 = 100.53 : x
2. Step 2: Convert to fraction form
   123.59/185.10 = 100.53/x
3. Step 3: Cross multiply
   123.59x = 185.10 × 100.53
4. Step 4: Simplify right side
   123.59x = 18,608.10
5. Step 5: Solve for x
   x = 18,608.10/123.59
6. Step 6: Final answer
   x = 150.56