Finding the Fourth Proportional to 64,642.29, 89,162.50 and 41,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,642.29 : 89,162.50 = 41,940.72 : x
2. Step 2: Convert to fraction form
   64,642.29/89,162.50 = 41,940.72/x
3. Step 3: Cross multiply
   64,642.29x = 89,162.50 × 41,940.72
4. Step 4: Simplify right side
   64,642.29x = 3,739,539,447
5. Step 5: Solve for x
   x = 3,739,539,447/64,642.29
6. Step 6: Final answer
   x = 57,849.74