Finding the Fourth Proportional to 112,264.80, 154,936.32 and 83,921.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,264.80 : 154,936.32 = 83,921.28 : x
2. Step 2: Convert to fraction form
   112,264.80/154,936.32 = 83,921.28/x
3. Step 3: Cross multiply
   112,264.80x = 154,936.32 × 83,921.28
4. Step 4: Simplify right side
   112,264.80x = 13,002,454,292.89
5. Step 5: Solve for x
   x = 13,002,454,292.89/112,264.80
6. Step 6: Final answer
   x = 115,819.51