Finding the Fourth Proportional to 62,796.72, 86,629.86 and 40,123.92

Step by Step Solution

1. Step 1: Write the proportion equation
   62,796.72 : 86,629.86 = 40,123.92 : x
2. Step 2: Convert to fraction form
   62,796.72/86,629.86 = 40,123.92/x
3. Step 3: Cross multiply
   62,796.72x = 86,629.86 × 40,123.92
4. Step 4: Simplify right side
   62,796.72x = 3,475,929,572.25
5. Step 5: Solve for x
   x = 3,475,929,572.25/62,796.72
6. Step 6: Final answer
   x = 55,352.09