Finding the Fourth Proportional to 84,300.42, 126,521.58 and 42,167.88

Step by Step Solution

1. Step 1: Write the proportion equation
   84,300.42 : 126,521.58 = 42,167.88 : x
2. Step 2: Convert to fraction form
   84,300.42/126,521.58 = 42,167.88/x
3. Step 3: Cross multiply
   84,300.42x = 126,521.58 × 42,167.88
4. Step 4: Simplify right side
   84,300.42x = 5,335,146,802.85
5. Step 5: Solve for x
   x = 5,335,146,802.85/84,300.42
6. Step 6: Final answer
   x = 63,287.31