Finding the Fourth Proportional to 105,971.10, 146,233.35 and 60,648.90

Step by Step Solution

1. Step 1: Write the proportion equation
   105,971.10 : 146,233.35 = 60,648.90 : x
2. Step 2: Convert to fraction form
   105,971.10/146,233.35 = 60,648.90/x
3. Step 3: Cross multiply
   105,971.10x = 146,233.35 × 60,648.90
4. Step 4: Simplify right side
   105,971.10x = 8,868,891,820.82
5. Step 5: Solve for x
   x = 8,868,891,820.82/105,971.10
6. Step 6: Final answer
   x = 83,691.61