Finding the Fourth Proportional to 99,268.42, 148,930.42 and 40,145.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99,268.42 : 148,930.42 = 40,145.60 : x
2. Step 2: Convert to fraction form
   99,268.42/148,930.42 = 40,145.60/x
3. Step 3: Cross multiply
   99,268.42x = 148,930.42 × 40,145.60
4. Step 4: Simplify right side
   99,268.42x = 5,978,901,069.15
5. Step 5: Solve for x
   x = 5,978,901,069.15/99,268.42
6. Step 6: Final answer
   x = 60,229.64