Finding the Fourth Proportional to 56,031.12, 77,322.96 and 30,880.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,031.12 : 77,322.96 = 30,880.62 : x
2. Step 2: Convert to fraction form
   56,031.12/77,322.96 = 30,880.62/x
3. Step 3: Cross multiply
   56,031.12x = 77,322.96 × 30,880.62
4. Step 4: Simplify right side
   56,031.12x = 2,387,780,945.04
5. Step 5: Solve for x
   x = 2,387,780,945.04/56,031.12
6. Step 6: Final answer
   x = 42,615.26