Finding the Fourth Proportional to 83.83, 115.74 and 51.10

Step by Step Solution

1. Step 1: Write the proportion equation
   83.83 : 115.74 = 51.10 : x
2. Step 2: Convert to fraction form
   83.83/115.74 = 51.10/x
3. Step 3: Cross multiply
   83.83x = 115.74 × 51.10
4. Step 4: Simplify right side
   83.83x = 5,914.34
5. Step 5: Solve for x
   x = 5,914.34/83.83
6. Step 6: Final answer
   x = 70.55