Finding the Fourth Proportional to 31,072.76, 46,827.82 and 28,115.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.76 : 46,827.82 = 28,115.18 : x
2. Step 2: Convert to fraction form
   31,072.76/46,827.82 = 28,115.18/x
3. Step 3: Cross multiply
   31,072.76x = 46,827.82 × 28,115.18
4. Step 4: Simplify right side
   31,072.76x = 1,316,572,588.31
5. Step 5: Solve for x
   x = 1,316,572,588.31/31,072.76
6. Step 6: Final answer
   x = 42,370.64