Finding the Fourth Proportional to 116,887.42, 161,229.84 and 81,064.36

Step by Step Solution

1. Step 1: Write the proportion equation
   116,887.42 : 161,229.84 = 81,064.36 : x
2. Step 2: Convert to fraction form
   116,887.42/161,229.84 = 81,064.36/x
3. Step 3: Cross multiply
   116,887.42x = 161,229.84 × 81,064.36
4. Step 4: Simplify right side
   116,887.42x = 13,069,993,792.50
5. Step 5: Solve for x
   x = 13,069,993,792.50/116,887.42
6. Step 6: Final answer
   x = 111,816.94