Finding the Fourth Proportional to 185,131.36, 277,710 and 91,612

Step by Step Solution

1. Step 1: Write the proportion equation
   185,131.36 : 277,710 = 91,612 : x
2. Step 2: Convert to fraction form
   185,131.36/277,710 = 91,612/x
3. Step 3: Cross multiply
   185,131.36x = 277,710 × 91,612
4. Step 4: Simplify right side
   185,131.36x = 25,441,568,520
5. Step 5: Solve for x
   x = 25,441,568,520/185,131.36
6. Step 6: Final answer
   x = 137,424.41