Finding the Fourth Proportional to 148,111.72, 204,393.32 and 80,128.49

Step by Step Solution

1. Step 1: Write the proportion equation
   148,111.72 : 204,393.32 = 80,128.49 : x
2. Step 2: Convert to fraction form
   148,111.72/204,393.32 = 80,128.49/x
3. Step 3: Cross multiply
   148,111.72x = 204,393.32 × 80,128.49
4. Step 4: Simplify right side
   148,111.72x = 16,377,728,097.69
5. Step 5: Solve for x
   x = 16,377,728,097.69/148,111.72
6. Step 6: Final answer
   x = 110,576.85