Finding the Fourth Proportional to 59,764.20, 89,840.70 and 42,354.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,764.20 : 89,840.70 = 42,354.60 : x
2. Step 2: Convert to fraction form
   59,764.20/89,840.70 = 42,354.60/x
3. Step 3: Cross multiply
   59,764.20x = 89,840.70 × 42,354.60
4. Step 4: Simplify right side
   59,764.20x = 3,805,166,912.22
5. Step 5: Solve for x
   x = 3,805,166,912.22/59,764.20
6. Step 6: Final answer
   x = 63,669.67