Finding the Fourth Proportional to 89,420.22, 123,420.24 and 59,206.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,420.22 : 123,420.24 = 59,206.68 : x
2. Step 2: Convert to fraction form
   89,420.22/123,420.24 = 59,206.68/x
3. Step 3: Cross multiply
   89,420.22x = 123,420.24 × 59,206.68
4. Step 4: Simplify right side
   89,420.22x = 7,307,302,655.20
5. Step 5: Solve for x
   x = 7,307,302,655.20/89,420.22
6. Step 6: Final answer
   x = 81,718.68