Finding the Fourth Proportional to 56,449.62, 77,901 and 30,956.22

Step by Step Solution

1. Step 1: Write the proportion equation
   56,449.62 : 77,901 = 30,956.22 : x
2. Step 2: Convert to fraction form
   56,449.62/77,901 = 30,956.22/x
3. Step 3: Cross multiply
   56,449.62x = 77,901 × 30,956.22
4. Step 4: Simplify right side
   56,449.62x = 2,411,520,494.22
5. Step 5: Solve for x
   x = 2,411,520,494.22/56,449.62
6. Step 6: Final answer
   x = 42,719.87