Finding the Fourth Proportional to 65,054.54, 89,800.04 and 42,399.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,054.54 : 89,800.04 = 42,399.05 : x
2. Step 2: Convert to fraction form
   65,054.54/89,800.04 = 42,399.05/x
3. Step 3: Cross multiply
   65,054.54x = 89,800.04 × 42,399.05
4. Step 4: Simplify right side
   65,054.54x = 3,807,436,042.96
5. Step 5: Solve for x
   x = 3,807,436,042.96/65,054.54
6. Step 6: Final answer
   x = 58,526.83