Finding the Fourth Proportional to 105,818.27, 146,019.57 and 62,790.35

Step by Step Solution

1. Step 1: Write the proportion equation
   105,818.27 : 146,019.57 = 62,790.35 : x
2. Step 2: Convert to fraction form
   105,818.27/146,019.57 = 62,790.35/x
3. Step 3: Cross multiply
   105,818.27x = 146,019.57 × 62,790.35
4. Step 4: Simplify right side
   105,818.27x = 9,168,619,528.87
5. Step 5: Solve for x
   x = 9,168,619,528.87/105,818.27
6. Step 6: Final answer
   x = 86,644.95