Finding the Fourth Proportional to 59,768.67, 89,668.13 and 42,921.03

Step by Step Solution

1. Step 1: Write the proportion equation
   59,768.67 : 89,668.13 = 42,921.03 : x
2. Step 2: Convert to fraction form
   59,768.67/89,668.13 = 42,921.03/x
3. Step 3: Cross multiply
   59,768.67x = 89,668.13 × 42,921.03
4. Step 4: Simplify right side
   59,768.67x = 3,848,648,283.17
5. Step 5: Solve for x
   x = 3,848,648,283.17/59,768.67
6. Step 6: Final answer
   x = 64,392.40