Finding the Fourth Proportional to 60,378.18, 90,583.67 and 42,958.73

Step by Step Solution

1. Step 1: Write the proportion equation
   60,378.18 : 90,583.67 = 42,958.73 : x
2. Step 2: Convert to fraction form
   60,378.18/90,583.67 = 42,958.73/x
3. Step 3: Cross multiply
   60,378.18x = 90,583.67 × 42,958.73
4. Step 4: Simplify right side
   60,378.18x = 3,891,359,076.42
5. Step 5: Solve for x
   x = 3,891,359,076.42/60,378.18
6. Step 6: Final answer
   x = 64,449.76