Finding the Fourth Proportional to 259,667.82, 389,552.23 and 99,732.06

Step by Step Solution

1. Step 1: Write the proportion equation
   259,667.82 : 389,552.23 = 99,732.06 : x
2. Step 2: Convert to fraction form
   259,667.82/389,552.23 = 99,732.06/x
3. Step 3: Cross multiply
   259,667.82x = 389,552.23 × 99,732.06
4. Step 4: Simplify right side
   259,667.82x = 38,850,846,302.97
5. Step 5: Solve for x
   x = 38,850,846,302.97/259,667.82
6. Step 6: Final answer
   x = 149,617.48