Finding the Fourth Proportional to 84,308.58, 126,449.10 and 28,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   84,308.58 : 126,449.10 = 28,146.42 : x
2. Step 2: Convert to fraction form
   84,308.58/126,449.10 = 28,146.42/x
3. Step 3: Cross multiply
   84,308.58x = 126,449.10 × 28,146.42
4. Step 4: Simplify right side
   84,308.58x = 3,559,089,477.22
5. Step 5: Solve for x
   x = 3,559,089,477.22/84,308.58
6. Step 6: Final answer
   x = 42,215.03