Finding the Fourth Proportional to 123.01, 169.76 and 73.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123.01 : 169.76 = 73.89 : x
2. Step 2: Convert to fraction form
   123.01/169.76 = 73.89/x
3. Step 3: Cross multiply
   123.01x = 169.76 × 73.89
4. Step 4: Simplify right side
   123.01x = 12,543.34
5. Step 5: Solve for x
   x = 12,543.34/123.01
6. Step 6: Final answer
   x = 101.97