Finding the Fourth Proportional to 59,701.20, 89,746.20 and 42,291.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,701.20 : 89,746.20 = 42,291.60 : x
2. Step 2: Convert to fraction form
   59,701.20/89,746.20 = 42,291.60/x
3. Step 3: Cross multiply
   59,701.20x = 89,746.20 × 42,291.60
4. Step 4: Simplify right side
   59,701.20x = 3,795,510,391.92
5. Step 5: Solve for x
   x = 3,795,510,391.92/59,701.20
6. Step 6: Final answer
   x = 63,575.11