Finding the Fourth Proportional to 109,391.45, 164,021.50 and 42,752.15

Step by Step Solution

1. Step 1: Write the proportion equation
   109,391.45 : 164,021.50 = 42,752.15 : x
2. Step 2: Convert to fraction form
   109,391.45/164,021.50 = 42,752.15/x
3. Step 3: Cross multiply
   109,391.45x = 164,021.50 × 42,752.15
4. Step 4: Simplify right side
   109,391.45x = 7,012,270,844.24
5. Step 5: Solve for x
   x = 7,012,270,844.24/109,391.45
6. Step 6: Final answer
   x = 64,102.55