Finding the Fourth Proportional to 109,878.21, 164,821.37 and 30,994.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,878.21 : 164,821.37 = 30,994.55 : x
2. Step 2: Convert to fraction form
   109,878.21/164,821.37 = 30,994.55/x
3. Step 3: Cross multiply
   109,878.21x = 164,821.37 × 30,994.55
4. Step 4: Simplify right side
   109,878.21x = 5,108,563,214.45
5. Step 5: Solve for x
   x = 5,108,563,214.45/109,878.21
6. Step 6: Final answer
   x = 46,492.96