Finding the Fourth Proportional to 790,067.50, 1,185,111.30 and 277,711.96

Step by Step Solution

1. Step 1: Write the proportion equation
   790,067.50 : 1,185,111.30 = 277,711.96 : x
2. Step 2: Convert to fraction form
   790,067.50/1,185,111.30 = 277,711.96/x
3. Step 3: Cross multiply
   790,067.50x = 1,185,111.30 × 277,711.96
4. Step 4: Simplify right side
   790,067.50x = 329,119,581,941.15
5. Step 5: Solve for x
   x = 329,119,581,941.15/790,067.50
6. Step 6: Final answer
   x = 416,571.47