Finding the Fourth Proportional to 116,897.79, 161,315.70 and 65,910.06

Step by Step Solution

1. Step 1: Write the proportion equation
   116,897.79 : 161,315.70 = 65,910.06 : x
2. Step 2: Convert to fraction form
   116,897.79/161,315.70 = 65,910.06/x
3. Step 3: Cross multiply
   116,897.79x = 161,315.70 × 65,910.06
4. Step 4: Simplify right side
   116,897.79x = 10,632,327,465.94
5. Step 5: Solve for x
   x = 10,632,327,465.94/116,897.79
6. Step 6: Final answer
   x = 90,954.05