Finding the Fourth Proportional to 64,668.44, 89,191.88 and 42,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,668.44 : 89,191.88 = 42,014.72 : x
2. Step 2: Convert to fraction form
   64,668.44/89,191.88 = 42,014.72/x
3. Step 3: Cross multiply
   64,668.44x = 89,191.88 × 42,014.72
4. Step 4: Simplify right side
   64,668.44x = 3,747,371,864.47
5. Step 5: Solve for x
   x = 3,747,371,864.47/64,668.44
6. Step 6: Final answer
   x = 57,947.46