Finding the Fourth Proportional to 74,354, 102,609.24 and 40,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   74,354 : 102,609.24 = 40,820.72 : x
2. Step 2: Convert to fraction form
   74,354/102,609.24 = 40,820.72/x
3. Step 3: Cross multiply
   74,354x = 102,609.24 × 40,820.72
4. Step 4: Simplify right side
   74,354x = 4,188,583,055.45
5. Step 5: Solve for x
   x = 4,188,583,055.45/74,354
6. Step 6: Final answer
   x = 56,332.99