Finding the Fourth Proportional to 148,428.24, 204,831.24 and 81,360.72

Step by Step Solution

1. Step 1: Write the proportion equation
   148,428.24 : 204,831.24 = 81,360.72 : x
2. Step 2: Convert to fraction form
   148,428.24/204,831.24 = 81,360.72/x
3. Step 3: Cross multiply
   148,428.24x = 204,831.24 × 81,360.72
4. Step 4: Simplify right side
   148,428.24x = 16,665,217,164.89
5. Step 5: Solve for x
   x = 16,665,217,164.89/148,428.24
6. Step 6: Final answer
   x = 112,277.94