Finding the Fourth Proportional to 115,524.91, 159,422.61 and 64,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,524.91 : 159,422.61 = 64,538.38 : x
2. Step 2: Convert to fraction form
   115,524.91/159,422.61 = 64,538.38/x
3. Step 3: Cross multiply
   115,524.91x = 159,422.61 × 64,538.38
4. Step 4: Simplify right side
   115,524.91x = 10,288,876,984.77
5. Step 5: Solve for x
   x = 10,288,876,984.77/115,524.91
6. Step 6: Final answer
   x = 89,061.98