Finding the Fourth Proportional to 89,171.55, 123,053.04 and 53,340.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,171.55 : 123,053.04 = 53,340.39 : x
2. Step 2: Convert to fraction form
   89,171.55/123,053.04 = 53,340.39/x
3. Step 3: Cross multiply
   89,171.55x = 123,053.04 × 53,340.39
4. Step 4: Simplify right side
   89,171.55x = 6,563,697,144.29
5. Step 5: Solve for x
   x = 6,563,697,144.29/89,171.55
6. Step 6: Final answer
   x = 73,607.53