Finding the Fourth Proportional to 105,978.16, 146,249.44 and 60,655.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,978.16 : 146,249.44 = 60,655.96 : x
2. Step 2: Convert to fraction form
   105,978.16/146,249.44 = 60,655.96/x
3. Step 3: Cross multiply
   105,978.16x = 146,249.44 × 60,655.96
4. Step 4: Simplify right side
   105,978.16x = 8,870,900,182.66
5. Step 5: Solve for x
   x = 8,870,900,182.66/105,978.16
6. Step 6: Final answer
   x = 83,704.98