Finding the Fourth Proportional to 56,469.72, 77,923.86 and 30,971.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,469.72 : 77,923.86 = 30,971.88 : x
2. Step 2: Convert to fraction form
   56,469.72/77,923.86 = 30,971.88/x
3. Step 3: Cross multiply
   56,469.72x = 77,923.86 × 30,971.88
4. Step 4: Simplify right side
   56,469.72x = 2,413,448,441.06
5. Step 5: Solve for x
   x = 2,413,448,441.06/56,469.72
6. Step 6: Final answer
   x = 42,738.81