Finding the Fourth Proportional to 92,640.38, 139,146.53 and 55,273.37

Step by Step Solution

1. Step 1: Write the proportion equation
   92,640.38 : 139,146.53 = 55,273.37 : x
2. Step 2: Convert to fraction form
   92,640.38/139,146.53 = 55,273.37/x
3. Step 3: Cross multiply
   92,640.38x = 139,146.53 × 55,273.37
4. Step 4: Simplify right side
   92,640.38x = 7,691,096,664.81
5. Step 5: Solve for x
   x = 7,691,096,664.81/92,640.38
6. Step 6: Final answer
   x = 83,021.00