Finding the Fourth Proportional to 64,915.40, 89,630.70 and 41,958.81

Step by Step Solution

1. Step 1: Write the proportion equation
   64,915.40 : 89,630.70 = 41,958.81 : x
2. Step 2: Convert to fraction form
   64,915.40/89,630.70 = 41,958.81/x
3. Step 3: Cross multiply
   64,915.40x = 89,630.70 × 41,958.81
4. Step 4: Simplify right side
   64,915.40x = 3,760,796,853.52
5. Step 5: Solve for x
   x = 3,760,796,853.52/64,915.40
6. Step 6: Final answer
   x = 57,933.82