Finding the Fourth Proportional to 276,681.05, 415,079.89 and 89,677.97

Step by Step Solution

1. Step 1: Write the proportion equation
   276,681.05 : 415,079.89 = 89,677.97 : x
2. Step 2: Convert to fraction form
   276,681.05/415,079.89 = 89,677.97/x
3. Step 3: Cross multiply
   276,681.05x = 415,079.89 × 89,677.97
4. Step 4: Simplify right side
   276,681.05x = 37,223,521,684.42
5. Step 5: Solve for x
   x = 37,223,521,684.42/276,681.05
6. Step 6: Final answer
   x = 134,535.86