Finding the Fourth Proportional to 123,621.91, 170,569.61 and 83,410.27

Step by Step Solution

1. Step 1: Write the proportion equation
   123,621.91 : 170,569.61 = 83,410.27 : x
2. Step 2: Convert to fraction form
   123,621.91/170,569.61 = 83,410.27/x
3. Step 3: Cross multiply
   123,621.91x = 170,569.61 × 83,410.27
4. Step 4: Simplify right side
   123,621.91x = 14,227,257,223.89
5. Step 5: Solve for x
   x = 14,227,257,223.89/123,621.91
6. Step 6: Final answer
   x = 115,086.86