Finding the Fourth Proportional to 105,989.01, 146,261.78 and 60,665.48

Step by Step Solution

1. Step 1: Write the proportion equation
   105,989.01 : 146,261.78 = 60,665.48 : x
2. Step 2: Convert to fraction form
   105,989.01/146,261.78 = 60,665.48/x
3. Step 3: Cross multiply
   105,989.01x = 146,261.78 × 60,665.48
4. Step 4: Simplify right side
   105,989.01x = 8,873,041,071.43
5. Step 5: Solve for x
   x = 8,873,041,071.43/105,989.01
6. Step 6: Final answer
   x = 83,716.62