Finding the Fourth Proportional to 89,408.10, 123,437.37 and 59,219.30

Step by Step Solution

1. Step 1: Write the proportion equation
   89,408.10 : 123,437.37 = 59,219.30 : x
2. Step 2: Convert to fraction form
   89,408.10/123,437.37 = 59,219.30/x
3. Step 3: Cross multiply
   89,408.10x = 123,437.37 × 59,219.30
4. Step 4: Simplify right side
   89,408.10x = 7,309,874,842.80
5. Step 5: Solve for x
   x = 7,309,874,842.80/89,408.10
6. Step 6: Final answer
   x = 81,758.53