Finding the Fourth Proportional to 89,198.63, 123,158.69 and 57,422.89

Step by Step Solution

1. Step 1: Write the proportion equation
   89,198.63 : 123,158.69 = 57,422.89 : x
2. Step 2: Convert to fraction form
   89,198.63/123,158.69 = 57,422.89/x
3. Step 3: Cross multiply
   89,198.63x = 123,158.69 × 57,422.89
4. Step 4: Simplify right side
   89,198.63x = 7,072,127,908.41
5. Step 5: Solve for x
   x = 7,072,127,908.41/89,198.63
6. Step 6: Final answer
   x = 79,285.16