Finding the Fourth Proportional to 115,973.28, 160,024.86 and 64,982.16

Step by Step Solution

1. Step 1: Write the proportion equation
   115,973.28 : 160,024.86 = 64,982.16 : x
2. Step 2: Convert to fraction form
   115,973.28/160,024.86 = 64,982.16/x
3. Step 3: Cross multiply
   115,973.28x = 160,024.86 × 64,982.16
4. Step 4: Simplify right side
   115,973.28x = 10,398,761,056.50
5. Step 5: Solve for x
   x = 10,398,761,056.50/115,973.28
6. Step 6: Final answer
   x = 89,665.15