Finding the Fourth Proportional to 87,981.94, 121,280.72 and 53,927.31

Step by Step Solution

1. Step 1: Write the proportion equation
   87,981.94 : 121,280.72 = 53,927.31 : x
2. Step 2: Convert to fraction form
   87,981.94/121,280.72 = 53,927.31/x
3. Step 3: Cross multiply
   87,981.94x = 121,280.72 × 53,927.31
4. Step 4: Simplify right side
   87,981.94x = 6,540,342,714.83
5. Step 5: Solve for x
   x = 6,540,342,714.83/87,981.94
6. Step 6: Final answer
   x = 74,337.33