Finding the Fourth Proportional to 64,065.87, 88,452.50 and 57,339.81

Step by Step Solution

1. Step 1: Write the proportion equation
   64,065.87 : 88,452.50 = 57,339.81 : x
2. Step 2: Convert to fraction form
   64,065.87/88,452.50 = 57,339.81/x
3. Step 3: Cross multiply
   64,065.87x = 88,452.50 × 57,339.81
4. Step 4: Simplify right side
   64,065.87x = 5,071,849,257.33
5. Step 5: Solve for x
   x = 5,071,849,257.33/64,065.87
6. Step 6: Final answer
   x = 79,166.17