Finding the Fourth Proportional to 105,729.14, 145,892.77 and 60,410.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,729.14 : 145,892.77 = 60,410.06 : x
2. Step 2: Convert to fraction form
   105,729.14/145,892.77 = 60,410.06/x
3. Step 3: Cross multiply
   105,729.14x = 145,892.77 × 60,410.06
4. Step 4: Simplify right side
   105,729.14x = 8,813,390,989.27
5. Step 5: Solve for x
   x = 8,813,390,989.27/105,729.14
6. Step 6: Final answer
   x = 83,358.20