Finding the Fourth Proportional to 124,736.39, 186,420.96 and 91,073.30

Step by Step Solution

1. Step 1: Write the proportion equation
   124,736.39 : 186,420.96 = 91,073.30 : x
2. Step 2: Convert to fraction form
   124,736.39/186,420.96 = 91,073.30/x
3. Step 3: Cross multiply
   124,736.39x = 186,420.96 × 91,073.30
4. Step 4: Simplify right side
   124,736.39x = 16,977,972,016.37
5. Step 5: Solve for x
   x = 16,977,972,016.37/124,736.39
6. Step 6: Final answer
   x = 136,110.82