Finding the Fourth Proportional to 31,488.14, 46,985.54 and 28,178.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,488.14 : 46,985.54 = 28,178.48 : x
2. Step 2: Convert to fraction form
   31,488.14/46,985.54 = 28,178.48/x
3. Step 3: Cross multiply
   31,488.14x = 46,985.54 × 28,178.48
4. Step 4: Simplify right side
   31,488.14x = 1,323,981,075.75
5. Step 5: Solve for x
   x = 1,323,981,075.75/31,488.14
6. Step 6: Final answer
   x = 42,046.97