Finding the Fourth Proportional to 105,780.37, 145,989.84 and 60,460.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,780.37 : 145,989.84 = 60,460.27 : x
2. Step 2: Convert to fraction form
   105,780.37/145,989.84 = 60,460.27/x
3. Step 3: Cross multiply
   105,780.37x = 145,989.84 × 60,460.27
4. Step 4: Simplify right side
   105,780.37x = 8,826,585,143.66
5. Step 5: Solve for x
   x = 8,826,585,143.66/105,780.37
6. Step 6: Final answer
   x = 83,442.56