Finding the Fourth Proportional to 76,853, 106,144.62 and 51,658.76

Step by Step Solution

1. Step 1: Write the proportion equation
   76,853 : 106,144.62 = 51,658.76 : x
2. Step 2: Convert to fraction form
   76,853/106,144.62 = 51,658.76/x
3. Step 3: Cross multiply
   76,853x = 106,144.62 × 51,658.76
4. Step 4: Simplify right side
   76,853x = 5,483,299,449.87
5. Step 5: Solve for x
   x = 5,483,299,449.87/76,853
6. Step 6: Final answer
   x = 71,347.89