Finding the Fourth Proportional to 64,014.43, 88,381.53 and 57,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,014.43 : 88,381.53 = 57,288.50 : x
2. Step 2: Convert to fraction form
   64,014.43/88,381.53 = 57,288.50/x
3. Step 3: Cross multiply
   64,014.43x = 88,381.53 × 57,288.50
4. Step 4: Simplify right side
   64,014.43x = 5,063,245,281.41
5. Step 5: Solve for x
   x = 5,063,245,281.41/64,014.43
6. Step 6: Final answer
   x = 79,095.37