Finding the Fourth Proportional to 105,884.90, 146,128.83 and 70,012.70

Step by Step Solution

1. Step 1: Write the proportion equation
   105,884.90 : 146,128.83 = 70,012.70 : x
2. Step 2: Convert to fraction form
   105,884.90/146,128.83 = 70,012.70/x
3. Step 3: Cross multiply
   105,884.90x = 146,128.83 × 70,012.70
4. Step 4: Simplify right side
   105,884.90x = 10,230,873,936.14
5. Step 5: Solve for x
   x = 10,230,873,936.14/105,884.90
6. Step 6: Final answer
   x = 96,622.60