Finding the Fourth Proportional to 91,870.78, 126,789.03 and 51,587.22

Step by Step Solution

1. Step 1: Write the proportion equation
   91,870.78 : 126,789.03 = 51,587.22 : x
2. Step 2: Convert to fraction form
   91,870.78/126,789.03 = 51,587.22/x
3. Step 3: Cross multiply
   91,870.78x = 126,789.03 × 51,587.22
4. Step 4: Simplify right side
   91,870.78x = 6,540,693,584.20
5. Step 5: Solve for x
   x = 6,540,693,584.20/91,870.78
6. Step 6: Final answer
   x = 71,194.49