Finding the Fourth Proportional to 107,498.70, 161,060.61 and 65,289.60

Step by Step Solution

1. Step 1: Write the proportion equation
   107,498.70 : 161,060.61 = 65,289.60 : x
2. Step 2: Convert to fraction form
   107,498.70/161,060.61 = 65,289.60/x
3. Step 3: Cross multiply
   107,498.70x = 161,060.61 × 65,289.60
4. Step 4: Simplify right side
   107,498.70x = 10,515,582,802.66
5. Step 5: Solve for x
   x = 10,515,582,802.66/107,498.70
6. Step 6: Final answer
   x = 97,820.56