Finding the Fourth Proportional to 56,414.88, 77,853.42 and 30,920.94

Step by Step Solution

1. Step 1: Write the proportion equation
   56,414.88 : 77,853.42 = 30,920.94 : x
2. Step 2: Convert to fraction form
   56,414.88/77,853.42 = 30,920.94/x
3. Step 3: Cross multiply
   56,414.88x = 77,853.42 × 30,920.94
4. Step 4: Simplify right side
   56,414.88x = 2,407,300,928.61
5. Step 5: Solve for x
   x = 2,407,300,928.61/56,414.88
6. Step 6: Final answer
   x = 42,671.38