Finding the Fourth Proportional to 201,111.18, 301,662.86 and 81,164.94

Step by Step Solution

1. Step 1: Write the proportion equation
   201,111.18 : 301,662.86 = 81,164.94 : x
2. Step 2: Convert to fraction form
   201,111.18/301,662.86 = 81,164.94/x
3. Step 3: Cross multiply
   201,111.18x = 301,662.86 × 81,164.94
4. Step 4: Simplify right side
   201,111.18x = 24,484,447,526.30
5. Step 5: Solve for x
   x = 24,484,447,526.30/201,111.18
6. Step 6: Final answer
   x = 121,745.83