Finding the Fourth Proportional to 72,411.42, 99,927.57 and 40,580.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,411.42 : 99,927.57 = 40,580.31 : x
2. Step 2: Convert to fraction form
   72,411.42/99,927.57 = 40,580.31/x
3. Step 3: Cross multiply
   72,411.42x = 99,927.57 × 40,580.31
4. Step 4: Simplify right side
   72,411.42x = 4,055,091,768.15
5. Step 5: Solve for x
   x = 4,055,091,768.15/72,411.42
6. Step 6: Final answer
   x = 56,000.72