Finding the Fourth Proportional to 92.02, 137.83 and 55.98

Step by Step Solution

1. Step 1: Write the proportion equation
   92.02 : 137.83 = 55.98 : x
2. Step 2: Convert to fraction form
   92.02/137.83 = 55.98/x
3. Step 3: Cross multiply
   92.02x = 137.83 × 55.98
4. Step 4: Simplify right side
   92.02x = 7,715.72
5. Step 5: Solve for x
   x = 7,715.72/92.02
6. Step 6: Final answer
   x = 83.85