Finding the Fourth Proportional to 53,959.55, 80,946.72 and 18,411.33

Step by Step Solution

1. Step 1: Write the proportion equation
   53,959.55 : 80,946.72 = 18,411.33 : x
2. Step 2: Convert to fraction form
   53,959.55/80,946.72 = 18,411.33/x
3. Step 3: Cross multiply
   53,959.55x = 80,946.72 × 18,411.33
4. Step 4: Simplify right side
   53,959.55x = 1,490,336,774.34
5. Step 5: Solve for x
   x = 1,490,336,774.34/53,959.55
6. Step 6: Final answer
   x = 27,619.52