Finding the Fourth Proportional to 309,510.10, 464,199.54 and 99,091.54

Step by Step Solution

1. Step 1: Write the proportion equation
   309,510.10 : 464,199.54 = 99,091.54 : x
2. Step 2: Convert to fraction form
   309,510.10/464,199.54 = 99,091.54/x
3. Step 3: Cross multiply
   309,510.10x = 464,199.54 × 99,091.54
4. Step 4: Simplify right side
   309,510.10x = 45,998,247,285.89
5. Step 5: Solve for x
   x = 45,998,247,285.89/309,510.10
6. Step 6: Final answer
   x = 148,616.30