Finding the Fourth Proportional to 151,106.27, 208,525.50 and 83,121.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151,106.27 : 208,525.50 = 83,121.78 : x
2. Step 2: Convert to fraction form
   151,106.27/208,525.50 = 83,121.78/x
3. Step 3: Cross multiply
   151,106.27x = 208,525.50 × 83,121.78
4. Step 4: Simplify right side
   151,106.27x = 17,333,010,735.39
5. Step 5: Solve for x
   x = 17,333,010,735.39/151,106.27
6. Step 6: Final answer
   x = 114,707.43