Finding the Fourth Proportional to 99,654.25, 137,522.88 and 54,942.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,654.25 : 137,522.88 = 54,942.25 : x
2. Step 2: Convert to fraction form
   99,654.25/137,522.88 = 54,942.25/x
3. Step 3: Cross multiply
   99,654.25x = 137,522.88 × 54,942.25
4. Step 4: Simplify right side
   99,654.25x = 7,555,816,453.68
5. Step 5: Solve for x
   x = 7,555,816,453.68/99,654.25
6. Step 6: Final answer
   x = 75,820.31