Finding the Fourth Proportional to 109,390.91, 164,020.71 and 42,751.65

Step by Step Solution

1. Step 1: Write the proportion equation
   109,390.91 : 164,020.71 = 42,751.65 : x
2. Step 2: Convert to fraction form
   109,390.91/164,020.71 = 42,751.65/x
3. Step 3: Cross multiply
   109,390.91x = 164,020.71 × 42,751.65
4. Step 4: Simplify right side
   109,390.91x = 7,012,155,531.91
5. Step 5: Solve for x
   x = 7,012,155,531.91/109,390.91
6. Step 6: Final answer
   x = 64,101.81