Finding the Fourth Proportional to 216,085.60, 323,715.30 and 116,212.60

Step by Step Solution

1. Step 1: Write the proportion equation
   216,085.60 : 323,715.30 = 116,212.60 : x
2. Step 2: Convert to fraction form
   216,085.60/323,715.30 = 116,212.60/x
3. Step 3: Cross multiply
   216,085.60x = 323,715.30 × 116,212.60
4. Step 4: Simplify right side
   216,085.60x = 37,619,796,672.78
5. Step 5: Solve for x
   x = 37,619,796,672.78/216,085.60
6. Step 6: Final answer
   x = 174,096.73