Finding the Fourth Proportional to 64,863.29, 89,465.34 and 42,160.41

Step by Step Solution

1. Step 1: Write the proportion equation
   64,863.29 : 89,465.34 = 42,160.41 : x
2. Step 2: Convert to fraction form
   64,863.29/89,465.34 = 42,160.41/x
3. Step 3: Cross multiply
   64,863.29x = 89,465.34 × 42,160.41
4. Step 4: Simplify right side
   64,863.29x = 3,771,895,573.29
5. Step 5: Solve for x
   x = 3,771,895,573.29/64,863.29
6. Step 6: Final answer
   x = 58,151.47