Finding the Fourth Proportional to 78,654.72, 108,558.72 and 51,749.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,654.72 : 108,558.72 = 51,749.76 : x
2. Step 2: Convert to fraction form
   78,654.72/108,558.72 = 51,749.76/x
3. Step 3: Cross multiply
   78,654.72x = 108,558.72 × 51,749.76
4. Step 4: Simplify right side
   78,654.72x = 5,617,887,705.91
5. Step 5: Solve for x
   x = 5,617,887,705.91/78,654.72
6. Step 6: Final answer
   x = 71,424.67