Finding the Fourth Proportional to 99,797.97, 137,721.69 and 54,477

Step by Step Solution

1. Step 1: Write the proportion equation
   99,797.97 : 137,721.69 = 54,477 : x
2. Step 2: Convert to fraction form
   99,797.97/137,721.69 = 54,477/x
3. Step 3: Cross multiply
   99,797.97x = 137,721.69 × 54,477
4. Step 4: Simplify right side
   99,797.97x = 7,502,664,506.13
5. Step 5: Solve for x
   x = 7,502,664,506.13/99,797.97
6. Step 6: Final answer
   x = 75,178.53