Finding the Fourth Proportional to 60.84, 90.69 and 55.98

Step by Step Solution

1. Step 1: Write the proportion equation
   60.84 : 90.69 = 55.98 : x
2. Step 2: Convert to fraction form
   60.84/90.69 = 55.98/x
3. Step 3: Cross multiply
   60.84x = 90.69 × 55.98
4. Step 4: Simplify right side
   60.84x = 5,076.83
5. Step 5: Solve for x
   x = 5,076.83/60.84
6. Step 6: Final answer
   x = 83.45