Finding the Fourth Proportional to 74,355, 102,610.62 and 40,821.72

Step by Step Solution

1. Step 1: Write the proportion equation
   74,355 : 102,610.62 = 40,821.72 : x
2. Step 2: Convert to fraction form
   74,355/102,610.62 = 40,821.72/x
3. Step 3: Cross multiply
   74,355x = 102,610.62 × 40,821.72
4. Step 4: Simplify right side
   74,355x = 4,188,741,998.67
5. Step 5: Solve for x
   x = 4,188,741,998.67/74,355
6. Step 6: Final answer
   x = 56,334.37