Finding the Fourth Proportional to 171,099.42, 256,662.83 and 51,147.60

Step by Step Solution

1. Step 1: Write the proportion equation
   171,099.42 : 256,662.83 = 51,147.60 : x
2. Step 2: Convert to fraction form
   171,099.42/256,662.83 = 51,147.60/x
3. Step 3: Cross multiply
   171,099.42x = 256,662.83 × 51,147.60
4. Step 4: Simplify right side
   171,099.42x = 13,127,687,891.58
5. Step 5: Solve for x
   x = 13,127,687,891.58/171,099.42
6. Step 6: Final answer
   x = 76,725.50