Finding the Fourth Proportional to 185,651.15, 256,191.72 and 100,766.39

Step by Step Solution

1. Step 1: Write the proportion equation
   185,651.15 : 256,191.72 = 100,766.39 : x
2. Step 2: Convert to fraction form
   185,651.15/256,191.72 = 100,766.39/x
3. Step 3: Cross multiply
   185,651.15x = 256,191.72 × 100,766.39
4. Step 4: Simplify right side
   185,651.15x = 25,815,513,491.33
5. Step 5: Solve for x
   x = 25,815,513,491.33/185,651.15
6. Step 6: Final answer
   x = 139,053.89