Finding the Fourth Proportional to 204,561.48, 306,828.72 and 98,021.64

Step by Step Solution

1. Step 1: Write the proportion equation
   204,561.48 : 306,828.72 = 98,021.64 : x
2. Step 2: Convert to fraction form
   204,561.48/306,828.72 = 98,021.64/x
3. Step 3: Cross multiply
   204,561.48x = 306,828.72 × 98,021.64
4. Step 4: Simplify right side
   204,561.48x = 30,075,854,333.50
5. Step 5: Solve for x
   x = 30,075,854,333.50/204,561.48
6. Step 6: Final answer
   x = 147,025.99