Finding the Fourth Proportional to 72,571.83, 100,155.74 and 42,371.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,571.83 : 100,155.74 = 42,371.79 : x
2. Step 2: Convert to fraction form
   72,571.83/100,155.74 = 42,371.79/x
3. Step 3: Cross multiply
   72,571.83x = 100,155.74 × 42,371.79
4. Step 4: Simplify right side
   72,571.83x = 4,243,777,770.72
5. Step 5: Solve for x
   x = 4,243,777,770.72/72,571.83
6. Step 6: Final answer
   x = 58,476.93