Finding the Fourth Proportional to 105,886.15, 146,130.56 and 70,013.95

Step by Step Solution

1. Step 1: Write the proportion equation
   105,886.15 : 146,130.56 = 70,013.95 : x
2. Step 2: Convert to fraction form
   105,886.15/146,130.56 = 70,013.95/x
3. Step 3: Cross multiply
   105,886.15x = 146,130.56 × 70,013.95
4. Step 4: Simplify right side
   105,886.15x = 10,231,177,721.31
5. Step 5: Solve for x
   x = 10,231,177,721.31/105,886.15
6. Step 6: Final answer
   x = 96,624.32