Finding the Fourth Proportional to 279,833.82, 386,123.54 and 157,309.98

Step by Step Solution

1. Step 1: Write the proportion equation
   279,833.82 : 386,123.54 = 157,309.98 : x
2. Step 2: Convert to fraction form
   279,833.82/386,123.54 = 157,309.98/x
3. Step 3: Cross multiply
   279,833.82x = 386,123.54 × 157,309.98
4. Step 4: Simplify right side
   279,833.82x = 60,741,085,568.38
5. Step 5: Solve for x
   x = 60,741,085,568.38/279,833.82
6. Step 6: Final answer
   x = 217,061.27