Finding the Fourth Proportional to 74,451.32, 111,697.82 and 30,109.20

Step by Step Solution

1. Step 1: Write the proportion equation
   74,451.32 : 111,697.82 = 30,109.20 : x
2. Step 2: Convert to fraction form
   74,451.32/111,697.82 = 30,109.20/x
3. Step 3: Cross multiply
   74,451.32x = 111,697.82 × 30,109.20
4. Step 4: Simplify right side
   74,451.32x = 3,363,131,851.40
5. Step 5: Solve for x
   x = 3,363,131,851.40/74,451.32
6. Step 6: Final answer
   x = 45,172.23