Finding the Fourth Proportional to 109,515.39, 164,290.83 and 42,919.41

Step by Step Solution

1. Step 1: Write the proportion equation
   109,515.39 : 164,290.83 = 42,919.41 : x
2. Step 2: Convert to fraction form
   109,515.39/164,290.83 = 42,919.41/x
3. Step 3: Cross multiply
   109,515.39x = 164,290.83 × 42,919.41
4. Step 4: Simplify right side
   109,515.39x = 7,051,265,492.01
5. Step 5: Solve for x
   x = 7,051,265,492.01/109,515.39
6. Step 6: Final answer
   x = 64,386.07