Finding the Fourth Proportional to 45,713.34, 68,266.22 and 45,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,713.34 : 68,266.22 = 45,218.50 : x
2. Step 2: Convert to fraction form
   45,713.34/68,266.22 = 45,218.50/x
3. Step 3: Cross multiply
   45,713.34x = 68,266.22 × 45,218.50
4. Step 4: Simplify right side
   45,713.34x = 3,086,895,672.31
5. Step 5: Solve for x
   x = 3,086,895,672.31/45,713.34
6. Step 6: Final answer
   x = 67,527.24