Finding the Fourth Proportional to 89,200.90, 123,161.79 and 57,425.14

Step by Step Solution

1. Step 1: Write the proportion equation
   89,200.90 : 123,161.79 = 57,425.14 : x
2. Step 2: Convert to fraction form
   89,200.90/123,161.79 = 57,425.14/x
3. Step 3: Cross multiply
   89,200.90x = 123,161.79 × 57,425.14
4. Step 4: Simplify right side
   89,200.90x = 7,072,583,033.40
5. Step 5: Solve for x
   x = 7,072,583,033.40/89,200.90
6. Step 6: Final answer
   x = 79,288.25