Finding the Fourth Proportional to 148,091.72, 221,676.89 and 80,454.62

Step by Step Solution

1. Step 1: Write the proportion equation
   148,091.72 : 221,676.89 = 80,454.62 : x
2. Step 2: Convert to fraction form
   148,091.72/221,676.89 = 80,454.62/x
3. Step 3: Cross multiply
   148,091.72x = 221,676.89 × 80,454.62
4. Step 4: Simplify right side
   148,091.72x = 17,834,930,099.65
5. Step 5: Solve for x
   x = 17,834,930,099.65/148,091.72
6. Step 6: Final answer
   x = 120,431.65