Finding the Fourth Proportional to 123,451.31, 185,163.51 and 83,725.48

Step by Step Solution

1. Step 1: Write the proportion equation
   123,451.31 : 185,163.51 = 83,725.48 : x
2. Step 2: Convert to fraction form
   123,451.31/185,163.51 = 83,725.48/x
3. Step 3: Cross multiply
   123,451.31x = 185,163.51 × 83,725.48
4. Step 4: Simplify right side
   123,451.31x = 15,502,903,670.72
5. Step 5: Solve for x
   x = 15,502,903,670.72/123,451.31
6. Step 6: Final answer
   x = 125,579.09