Finding the Fourth Proportional to 78.74, 108.67 and 45.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78.74 : 108.67 = 45.98 : x
2. Step 2: Convert to fraction form
   78.74/108.67 = 45.98/x
3. Step 3: Cross multiply
   78.74x = 108.67 × 45.98
4. Step 4: Simplify right side
   78.74x = 4,996.96
5. Step 5: Solve for x
   x = 4,996.96/78.74
6. Step 6: Final answer
   x = 63.46