Finding the Fourth Proportional to 115,980.53, 160,064.37 and 65,001.89

Step by Step Solution

1. Step 1: Write the proportion equation
   115,980.53 : 160,064.37 = 65,001.89 : x
2. Step 2: Convert to fraction form
   115,980.53/160,064.37 = 65,001.89/x
3. Step 3: Cross multiply
   115,980.53x = 160,064.37 × 65,001.89
4. Step 4: Simplify right side
   115,980.53x = 10,404,486,971.82
5. Step 5: Solve for x
   x = 10,404,486,971.82/115,980.53
6. Step 6: Final answer
   x = 89,708.91