Finding the Fourth Proportional to 89,362.67, 123,289.64 and 57,116.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89,362.67 : 123,289.64 = 57,116.16 : x
2. Step 2: Convert to fraction form
   89,362.67/123,289.64 = 57,116.16/x
3. Step 3: Cross multiply
   89,362.67x = 123,289.64 × 57,116.16
4. Step 4: Simplify right side
   89,362.67x = 7,041,830,804.58
5. Step 5: Solve for x
   x = 7,041,830,804.58/89,362.67
6. Step 6: Final answer
   x = 78,800.59