Finding the Fourth Proportional to 105,630.89, 158,535.23 and 98,980.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,630.89 : 158,535.23 = 98,980.79 : x
2. Step 2: Convert to fraction form
   105,630.89/158,535.23 = 98,980.79/x
3. Step 3: Cross multiply
   105,630.89x = 158,535.23 × 98,980.79
4. Step 4: Simplify right side
   105,630.89x = 15,691,941,020.65
5. Step 5: Solve for x
   x = 15,691,941,020.65/105,630.89
6. Step 6: Final answer
   x = 148,554.48