Finding the Fourth Proportional to 185,828.82, 278,838.56 and 91,057.22

Step by Step Solution

1. Step 1: Write the proportion equation
   185,828.82 : 278,838.56 = 91,057.22 : x
2. Step 2: Convert to fraction form
   185,828.82/278,838.56 = 91,057.22/x
3. Step 3: Cross multiply
   185,828.82x = 278,838.56 × 91,057.22
4. Step 4: Simplify right side
   185,828.82x = 25,390,263,981.50
5. Step 5: Solve for x
   x = 25,390,263,981.50/185,828.82
6. Step 6: Final answer
   x = 136,632.54