Finding the Fourth Proportional to 99,844.45, 137,780.20 and 54,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,844.45 : 137,780.20 = 54,513.69 : x
2. Step 2: Convert to fraction form
   99,844.45/137,780.20 = 54,513.69/x
3. Step 3: Cross multiply
   99,844.45x = 137,780.20 × 54,513.69
4. Step 4: Simplify right side
   99,844.45x = 7,510,906,974.65
5. Step 5: Solve for x
   x = 7,510,906,974.65/99,844.45
6. Step 6: Final answer
   x = 75,226.09