Finding the Fourth Proportional to 155,322.78, 233,053.29 and 81,433.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,322.78 : 233,053.29 = 81,433.50 : x
2. Step 2: Convert to fraction form
   155,322.78/233,053.29 = 81,433.50/x
3. Step 3: Cross multiply
   155,322.78x = 233,053.29 × 81,433.50
4. Step 4: Simplify right side
   155,322.78x = 18,978,345,091.22
5. Step 5: Solve for x
   x = 18,978,345,091.22/155,322.78
6. Step 6: Final answer
   x = 122,186.49