Finding the Fourth Proportional to 65,973.96, 90,958.41 and 42,059.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,973.96 : 90,958.41 = 42,059.12 : x
2. Step 2: Convert to fraction form
   65,973.96/90,958.41 = 42,059.12/x
3. Step 3: Cross multiply
   65,973.96x = 90,958.41 × 42,059.12
4. Step 4: Simplify right side
   65,973.96x = 3,825,630,226.41
5. Step 5: Solve for x
   x = 3,825,630,226.41/65,973.96
6. Step 6: Final answer
   x = 57,986.97