Finding the Fourth Proportional to 59,769.92, 89,670 and 42,922.28

Step by Step Solution

1. Step 1: Write the proportion equation
   59,769.92 : 89,670 = 42,922.28 : x
2. Step 2: Convert to fraction form
   59,769.92/89,670 = 42,922.28/x
3. Step 3: Cross multiply
   59,769.92x = 89,670 × 42,922.28
4. Step 4: Simplify right side
   59,769.92x = 3,848,840,847.60
5. Step 5: Solve for x
   x = 3,848,840,847.60/59,769.92
6. Step 6: Final answer
   x = 64,394.28