Finding the Fourth Proportional to 276,789.72, 381,970.98 and 155,932.47

Step by Step Solution

1. Step 1: Write the proportion equation
   276,789.72 : 381,970.98 = 155,932.47 : x
2. Step 2: Convert to fraction form
   276,789.72/381,970.98 = 155,932.47/x
3. Step 3: Cross multiply
   276,789.72x = 381,970.98 × 155,932.47
4. Step 4: Simplify right side
   276,789.72x = 59,561,678,379.72
5. Step 5: Solve for x
   x = 59,561,678,379.72/276,789.72
6. Step 6: Final answer
   x = 215,187.47