Finding the Fourth Proportional to 105,096.85, 157,707.57 and 98,447.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,096.85 : 157,707.57 = 98,447.30 : x
2. Step 2: Convert to fraction form
   105,096.85/157,707.57 = 98,447.30/x
3. Step 3: Cross multiply
   105,096.85x = 157,707.57 × 98,447.30
4. Step 4: Simplify right side
   105,096.85x = 15,525,884,456.06
5. Step 5: Solve for x
   x = 15,525,884,456.06/105,096.85
6. Step 6: Final answer
   x = 147,729.31