Finding the Fourth Proportional to 55,978.40, 77,253.76 and 30,827.92

Step by Step Solution

1. Step 1: Write the proportion equation
   55,978.40 : 77,253.76 = 30,827.92 : x
2. Step 2: Convert to fraction form
   55,978.40/77,253.76 = 30,827.92/x
3. Step 3: Cross multiply
   55,978.40x = 77,253.76 × 30,827.92
4. Step 4: Simplify right side
   55,978.40x = 2,381,572,732.98
5. Step 5: Solve for x
   x = 2,381,572,732.98/55,978.40
6. Step 6: Final answer
   x = 42,544.49