Finding the Fourth Proportional to 139,062.21, 208,022.02 and 111,036.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.21 : 208,022.02 = 111,036.99 : x
2. Step 2: Convert to fraction form
   139,062.21/208,022.02 = 111,036.99/x
3. Step 3: Cross multiply
   139,062.21x = 208,022.02 × 111,036.99
4. Step 4: Simplify right side
   139,062.21x = 23,098,139,457.01
5. Step 5: Solve for x
   x = 23,098,139,457.01/139,062.21
6. Step 6: Final answer
   x = 166,099.33