Finding the Fourth Proportional to 109,443.16, 164,067.30 and 42,930.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,443.16 : 164,067.30 = 42,930.76 : x
2. Step 2: Convert to fraction form
   109,443.16/164,067.30 = 42,930.76/x
3. Step 3: Cross multiply
   109,443.16x = 164,067.30 × 42,930.76
4. Step 4: Simplify right side
   109,443.16x = 7,043,533,880.15
5. Step 5: Solve for x
   x = 7,043,533,880.15/109,443.16
6. Step 6: Final answer
   x = 64,357.92