Finding the Fourth Proportional to 50,478.72, 69,659.72 and 29,259.96

Step by Step Solution

1. Step 1: Write the proportion equation
   50,478.72 : 69,659.72 = 29,259.96 : x
2. Step 2: Convert to fraction form
   50,478.72/69,659.72 = 29,259.96/x
3. Step 3: Cross multiply
   50,478.72x = 69,659.72 × 29,259.96
4. Step 4: Simplify right side
   50,478.72x = 2,038,240,620.81
5. Step 5: Solve for x
   x = 2,038,240,620.81/50,478.72
6. Step 6: Final answer
   x = 40,378.22