Finding the Fourth Proportional to 99,771.30, 149,664.15 and 60,243.30

Step by Step Solution

1. Step 1: Write the proportion equation
   99,771.30 : 149,664.15 = 60,243.30 : x
2. Step 2: Convert to fraction form
   99,771.30/149,664.15 = 60,243.30/x
3. Step 3: Cross multiply
   99,771.30x = 149,664.15 × 60,243.30
4. Step 4: Simplify right side
   99,771.30x = 9,016,262,287.70
5. Step 5: Solve for x
   x = 9,016,262,287.70/99,771.30
6. Step 6: Final answer
   x = 90,369.30