Finding the Fourth Proportional to 486,300.48, 729,487.59 and 131,309.34

Step by Step Solution

1. Step 1: Write the proportion equation
   486,300.48 : 729,487.59 = 131,309.34 : x
2. Step 2: Convert to fraction form
   486,300.48/729,487.59 = 131,309.34/x
3. Step 3: Cross multiply
   486,300.48x = 729,487.59 × 131,309.34
4. Step 4: Simplify right side
   486,300.48x = 95,788,533,981.09
5. Step 5: Solve for x
   x = 95,788,533,981.09/486,300.48
6. Step 6: Final answer
   x = 196,973.97