Finding the Fourth Proportional to 96,219.30, 143,940.15 and 83,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   96,219.30 : 143,940.15 = 83,216.10 : x
2. Step 2: Convert to fraction form
   96,219.30/143,940.15 = 83,216.10/x
3. Step 3: Cross multiply
   96,219.30x = 143,940.15 × 83,216.10
4. Step 4: Simplify right side
   96,219.30x = 11,978,137,916.42
5. Step 5: Solve for x
   x = 11,978,137,916.42/96,219.30
6. Step 6: Final answer
   x = 124,487.89