Finding the Fourth Proportional to 99,595.57, 137,441.89 and 54,273.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,595.57 : 137,441.89 = 54,273.54 : x
2. Step 2: Convert to fraction form
   99,595.57/137,441.89 = 54,273.54/x
3. Step 3: Cross multiply
   99,595.57x = 137,441.89 × 54,273.54
4. Step 4: Simplify right side
   99,595.57x = 7,459,457,914.59
5. Step 5: Solve for x
   x = 7,459,457,914.59/99,595.57
6. Step 6: Final answer
   x = 74,897.49