Finding the Fourth Proportional to 115,963.38, 160,037.10 and 64,973.34

Step by Step Solution

1. Step 1: Write the proportion equation
   115,963.38 : 160,037.10 = 64,973.34 : x
2. Step 2: Convert to fraction form
   115,963.38/160,037.10 = 64,973.34/x
3. Step 3: Cross multiply
   115,963.38x = 160,037.10 × 64,973.34
4. Step 4: Simplify right side
   115,963.38x = 10,398,144,910.91
5. Step 5: Solve for x
   x = 10,398,144,910.91/115,963.38
6. Step 6: Final answer
   x = 89,667.49