Finding the Fourth Proportional to 105,956.78, 146,228.55 and 60,648.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,956.78 : 146,228.55 = 60,648.98 : x
2. Step 2: Convert to fraction form
   105,956.78/146,228.55 = 60,648.98/x
3. Step 3: Cross multiply
   105,956.78x = 146,228.55 × 60,648.98
4. Step 4: Simplify right side
   105,956.78x = 8,868,612,404.38
5. Step 5: Solve for x
   x = 8,868,612,404.38/105,956.78
6. Step 6: Final answer
   x = 83,700.28