Finding the Fourth Proportional to 76.59, 105.61 and 52.03

Step by Step Solution

1. Step 1: Write the proportion equation
   76.59 : 105.61 = 52.03 : x
2. Step 2: Convert to fraction form
   76.59/105.61 = 52.03/x
3. Step 3: Cross multiply
   76.59x = 105.61 × 52.03
4. Step 4: Simplify right side
   76.59x = 5,494.89
5. Step 5: Solve for x
   x = 5,494.89/76.59
6. Step 6: Final answer
   x = 71.74