Finding the Fourth Proportional to 276,295, 414,510.54 and 89,306.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,295 : 414,510.54 = 89,306.50 : x
2. Step 2: Convert to fraction form
   276,295/414,510.54 = 89,306.50/x
3. Step 3: Cross multiply
   276,295x = 414,510.54 × 89,306.50
4. Step 4: Simplify right side
   276,295x = 37,018,485,540.51
5. Step 5: Solve for x
   x = 37,018,485,540.51/276,295
6. Step 6: Final answer
   x = 133,981.74