Finding the Fourth Proportional to 116,884.43, 161,225.71 and 81,061.37

Step by Step Solution

1. Step 1: Write the proportion equation
   116,884.43 : 161,225.71 = 81,061.37 : x
2. Step 2: Convert to fraction form
   116,884.43/161,225.71 = 81,061.37/x
3. Step 3: Cross multiply
   116,884.43x = 161,225.71 × 81,061.37
4. Step 4: Simplify right side
   116,884.43x = 13,069,176,931.82
5. Step 5: Solve for x
   x = 13,069,176,931.82/116,884.43
6. Step 6: Final answer
   x = 111,812.81