Finding the Fourth Proportional to 115,976.58, 160,060.96 and 65,003.08

Step by Step Solution

1. Step 1: Write the proportion equation
   115,976.58 : 160,060.96 = 65,003.08 : x
2. Step 2: Convert to fraction form
   115,976.58/160,060.96 = 65,003.08/x
3. Step 3: Cross multiply
   115,976.58x = 160,060.96 × 65,003.08
4. Step 4: Simplify right side
   115,976.58x = 10,404,455,387.76
5. Step 5: Solve for x
   x = 10,404,455,387.76/115,976.58
6. Step 6: Final answer
   x = 89,711.69