Finding the Fourth Proportional to 64,979.97, 89,672.72 and 38,123.00

Step by Step Solution

1. Step 1: Write the proportion equation
   64,979.97 : 89,672.72 = 38,123.00 : x
2. Step 2: Convert to fraction form
   64,979.97/89,672.72 = 38,123.00/x
3. Step 3: Cross multiply
   64,979.97x = 89,672.72 × 38,123.00
4. Step 4: Simplify right side
   64,979.97x = 3,418,593,138.13
5. Step 5: Solve for x
   x = 3,418,593,138.13/64,979.97
6. Step 6: Final answer
   x = 52,609.95