Finding the Fourth Proportional to 64,642.62, 89,198.79 and 37,423.34

Step by Step Solution

1. Step 1: Write the proportion equation
   64,642.62 : 89,198.79 = 37,423.34 : x
2. Step 2: Convert to fraction form
   64,642.62/89,198.79 = 37,423.34/x
3. Step 3: Cross multiply
   64,642.62x = 89,198.79 × 37,423.34
4. Step 4: Simplify right side
   64,642.62x = 3,338,116,645.76
5. Step 5: Solve for x
   x = 3,338,116,645.76/64,642.62
6. Step 6: Final answer
   x = 51,639.56