Finding the Fourth Proportional to 156,083.10, 233,796.60 and 129,839.10

Step by Step Solution

1. Step 1: Write the proportion equation
   156,083.10 : 233,796.60 = 129,839.10 : x
2. Step 2: Convert to fraction form
   156,083.10/233,796.60 = 129,839.10/x
3. Step 3: Cross multiply
   156,083.10x = 233,796.60 × 129,839.10
4. Step 4: Simplify right side
   156,083.10x = 30,355,940,127.06
5. Step 5: Solve for x
   x = 30,355,940,127.06/156,083.10
6. Step 6: Final answer
   x = 194,485.76