Finding the Fourth Proportional to 83,112.72, 124,679.86 and 38,123.23

Step by Step Solution

1. Step 1: Write the proportion equation
   83,112.72 : 124,679.86 = 38,123.23 : x
2. Step 2: Convert to fraction form
   83,112.72/124,679.86 = 38,123.23/x
3. Step 3: Cross multiply
   83,112.72x = 124,679.86 × 38,123.23
4. Step 4: Simplify right side
   83,112.72x = 4,753,198,979.15
5. Step 5: Solve for x
   x = 4,753,198,979.15/83,112.72
6. Step 6: Final answer
   x = 57,189.79