Finding the Fourth Proportional to 91,983.67, 137,950.78 and 25,408.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91,983.67 : 137,950.78 = 25,408.15 : x
2. Step 2: Convert to fraction form
   91,983.67/137,950.78 = 25,408.15/x
3. Step 3: Cross multiply
   91,983.67x = 137,950.78 × 25,408.15
4. Step 4: Simplify right side
   91,983.67x = 3,505,074,110.86
5. Step 5: Solve for x
   x = 3,505,074,110.86/91,983.67
6. Step 6: Final answer
   x = 38,105.40