Finding the Fourth Proportional to 59,515.92, 89,040.60 and 42,907.68

Step by Step Solution

1. Step 1: Write the proportion equation
   59,515.92 : 89,040.60 = 42,907.68 : x
2. Step 2: Convert to fraction form
   59,515.92/89,040.60 = 42,907.68/x
3. Step 3: Cross multiply
   59,515.92x = 89,040.60 × 42,907.68
4. Step 4: Simplify right side
   59,515.92x = 3,820,525,571.81
5. Step 5: Solve for x
   x = 3,820,525,571.81/59,515.92
6. Step 6: Final answer
   x = 64,193.34