Finding the Fourth Proportional to 84,561.91, 126,751.16 and 42,340.18

Step by Step Solution

1. Step 1: Write the proportion equation
   84,561.91 : 126,751.16 = 42,340.18 : x
2. Step 2: Convert to fraction form
   84,561.91/126,751.16 = 42,340.18/x
3. Step 3: Cross multiply
   84,561.91x = 126,751.16 × 42,340.18
4. Step 4: Simplify right side
   84,561.91x = 5,366,666,929.61
5. Step 5: Solve for x
   x = 5,366,666,929.61/84,561.91
6. Step 6: Final answer
   x = 63,464.35