Finding the Fourth Proportional to 56,081.60, 77,392.72 and 30,588

Step by Step Solution

1. Step 1: Write the proportion equation
   56,081.60 : 77,392.72 = 30,588 : x
2. Step 2: Convert to fraction form
   56,081.60/77,392.72 = 30,588/x
3. Step 3: Cross multiply
   56,081.60x = 77,392.72 × 30,588
4. Step 4: Simplify right side
   56,081.60x = 2,367,288,519.36
5. Step 5: Solve for x
   x = 2,367,288,519.36/56,081.60
6. Step 6: Final answer
   x = 42,211.50