Finding the Fourth Proportional to 99,399.80, 149,147.60 and 49,484.30

Step by Step Solution

1. Step 1: Write the proportion equation
   99,399.80 : 149,147.60 = 49,484.30 : x
2. Step 2: Convert to fraction form
   99,399.80/149,147.60 = 49,484.30/x
3. Step 3: Cross multiply
   99,399.80x = 149,147.60 × 49,484.30
4. Step 4: Simplify right side
   99,399.80x = 7,380,463,589.52
5. Step 5: Solve for x
   x = 7,380,463,589.52/99,399.80
6. Step 6: Final answer
   x = 74,250.29