Finding the Fourth Proportional to 151,530.73, 209,137.05 and 91,162.39

Step by Step Solution

1. Step 1: Write the proportion equation
   151,530.73 : 209,137.05 = 91,162.39 : x
2. Step 2: Convert to fraction form
   151,530.73/209,137.05 = 91,162.39/x
3. Step 3: Cross multiply
   151,530.73x = 209,137.05 × 91,162.39
4. Step 4: Simplify right side
   151,530.73x = 19,065,433,315.55
5. Step 5: Solve for x
   x = 19,065,433,315.55/151,530.73
6. Step 6: Final answer
   x = 125,818.92