Finding the Fourth Proportional to 56,013.96, 77,298.33 and 30,520.63

Step by Step Solution

1. Step 1: Write the proportion equation
   56,013.96 : 77,298.33 = 30,520.63 : x
2. Step 2: Convert to fraction form
   56,013.96/77,298.33 = 30,520.63/x
3. Step 3: Cross multiply
   56,013.96x = 77,298.33 × 30,520.63
4. Step 4: Simplify right side
   56,013.96x = 2,359,193,729.55
5. Step 5: Solve for x
   x = 2,359,193,729.55/56,013.96
6. Step 6: Final answer
   x = 42,117.96