Finding the Fourth Proportional to 72,256.34, 99,713.86 and 40,425.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,256.34 : 99,713.86 = 40,425.86 : x
2. Step 2: Convert to fraction form
   72,256.34/99,713.86 = 40,425.86/x
3. Step 3: Cross multiply
   72,256.34x = 99,713.86 × 40,425.86
4. Step 4: Simplify right side
   72,256.34x = 4,031,018,544.42
5. Step 5: Solve for x
   x = 4,031,018,544.42/72,256.34
6. Step 6: Final answer
   x = 55,787.75