Finding the Fourth Proportional to 40,118.16, 55,364.28 and 23,121

Step by Step Solution

1. Step 1: Write the proportion equation
   40,118.16 : 55,364.28 = 23,121 : x
2. Step 2: Convert to fraction form
   40,118.16/55,364.28 = 23,121/x
3. Step 3: Cross multiply
   40,118.16x = 55,364.28 × 23,121
4. Step 4: Simplify right side
   40,118.16x = 1,280,077,517.88
5. Step 5: Solve for x
   x = 1,280,077,517.88/40,118.16
6. Step 6: Final answer
   x = 31,907.68