Finding the Fourth Proportional to 196,431.50, 271,062.71 and 115,840.55

Step by Step Solution

1. Step 1: Write the proportion equation
   196,431.50 : 271,062.71 = 115,840.55 : x
2. Step 2: Convert to fraction form
   196,431.50/271,062.71 = 115,840.55/x
3. Step 3: Cross multiply
   196,431.50x = 271,062.71 × 115,840.55
4. Step 4: Simplify right side
   196,431.50x = 31,400,053,410.89
5. Step 5: Solve for x
   x = 31,400,053,410.89/196,431.50
6. Step 6: Final answer
   x = 159,852.43