Finding the Fourth Proportional to 99,533.25, 137,355.89 and 54,821.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,533.25 : 137,355.89 = 54,821.25 : x
2. Step 2: Convert to fraction form
   99,533.25/137,355.89 = 54,821.25/x
3. Step 3: Cross multiply
   99,533.25x = 137,355.89 × 54,821.25
4. Step 4: Simplify right side
   99,533.25x = 7,530,021,310.56
5. Step 5: Solve for x
   x = 7,530,021,310.56/99,533.25
6. Step 6: Final answer
   x = 75,653.33