Finding the Fourth Proportional to 64,904.68, 89,582.88 and 42,204.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,904.68 : 89,582.88 = 42,204.16 : x
2. Step 2: Convert to fraction form
   64,904.68/89,582.88 = 42,204.16/x
3. Step 3: Cross multiply
   64,904.68x = 89,582.88 × 42,204.16
4. Step 4: Simplify right side
   64,904.68x = 3,780,770,200.78
5. Step 5: Solve for x
   x = 3,780,770,200.78/64,904.68
6. Step 6: Final answer
   x = 58,251.12