Finding the Fourth Proportional to 56,108.72, 77,430.30 and 30,958.22

Step by Step Solution

1. Step 1: Write the proportion equation
   56,108.72 : 77,430.30 = 30,958.22 : x
2. Step 2: Convert to fraction form
   56,108.72/77,430.30 = 30,958.22/x
3. Step 3: Cross multiply
   56,108.72x = 77,430.30 × 30,958.22
4. Step 4: Simplify right side
   56,108.72x = 2,397,104,262.07
5. Step 5: Solve for x
   x = 2,397,104,262.07/56,108.72
6. Step 6: Final answer
   x = 42,722.49