Finding the Fourth Proportional to 78,789.66, 108,848.30 and 51,630.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,789.66 : 108,848.30 = 51,630.29 : x
2. Step 2: Convert to fraction form
   78,789.66/108,848.30 = 51,630.29/x
3. Step 3: Cross multiply
   78,789.66x = 108,848.30 × 51,630.29
4. Step 4: Simplify right side
   78,789.66x = 5,619,868,848.78
5. Step 5: Solve for x
   x = 5,619,868,848.78/78,789.66
6. Step 6: Final answer
   x = 71,327.49