Finding the Fourth Proportional to 65,057.54, 89,804.18 and 42,402.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,057.54 : 89,804.18 = 42,402.05 : x
2. Step 2: Convert to fraction form
   65,057.54/89,804.18 = 42,402.05/x
3. Step 3: Cross multiply
   65,057.54x = 89,804.18 × 42,402.05
4. Step 4: Simplify right side
   65,057.54x = 3,807,881,330.57
5. Step 5: Solve for x
   x = 3,807,881,330.57/65,057.54
6. Step 6: Final answer
   x = 58,530.98