Finding the Fourth Proportional to 31,434.63, 47,180.18 and 28,097.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,434.63 : 47,180.18 = 28,097.62 : x
2. Step 2: Convert to fraction form
   31,434.63/47,180.18 = 28,097.62/x
3. Step 3: Cross multiply
   31,434.63x = 47,180.18 × 28,097.62
4. Step 4: Simplify right side
   31,434.63x = 1,325,650,769.17
5. Step 5: Solve for x
   x = 1,325,650,769.17/31,434.63
6. Step 6: Final answer
   x = 42,171.67