Finding the Fourth Proportional to 123.98, 185.96 and 59.86

Step by Step Solution

1. Step 1: Write the proportion equation
   123.98 : 185.96 = 59.86 : x
2. Step 2: Convert to fraction form
   123.98/185.96 = 59.86/x
3. Step 3: Cross multiply
   123.98x = 185.96 × 59.86
4. Step 4: Simplify right side
   123.98x = 11,131.57
5. Step 5: Solve for x
   x = 11,131.57/123.98
6. Step 6: Final answer
   x = 89.79