Finding the Fourth Proportional to 326,015.37, 488,970.57 and 89,302.73

Step by Step Solution

1. Step 1: Write the proportion equation
   326,015.37 : 488,970.57 = 89,302.73 : x
2. Step 2: Convert to fraction form
   326,015.37/488,970.57 = 89,302.73/x
3. Step 3: Cross multiply
   326,015.37x = 488,970.57 × 89,302.73
4. Step 4: Simplify right side
   326,015.37x = 43,666,404,345.80
5. Step 5: Solve for x
   x = 43,666,404,345.80/326,015.37
6. Step 6: Final answer
   x = 133,939.71