Finding the Fourth Proportional to 148,111.74, 204,393.33 and 80,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,111.74 : 204,393.33 = 80,128.50 : x
2. Step 2: Convert to fraction form
   148,111.74/204,393.33 = 80,128.50/x
3. Step 3: Cross multiply
   148,111.74x = 204,393.33 × 80,128.50
4. Step 4: Simplify right side
   148,111.74x = 16,377,730,942.91
5. Step 5: Solve for x
   x = 16,377,730,942.91/148,111.74
6. Step 6: Final answer
   x = 110,576.86