Finding the Fourth Proportional to 309,449.12, 464,180.16 and 99,086.45

Step by Step Solution

1. Step 1: Write the proportion equation
   309,449.12 : 464,180.16 = 99,086.45 : x
2. Step 2: Convert to fraction form
   309,449.12/464,180.16 = 99,086.45/x
3. Step 3: Cross multiply
   309,449.12x = 464,180.16 × 99,086.45
4. Step 4: Simplify right side
   309,449.12x = 45,993,964,214.83
5. Step 5: Solve for x
   x = 45,993,964,214.83/309,449.12
6. Step 6: Final answer
   x = 148,631.75