Finding the Fourth Proportional to 56,019.58, 77,306.88 and 30,869.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,019.58 : 77,306.88 = 30,869.08 : x
2. Step 2: Convert to fraction form
   56,019.58/77,306.88 = 30,869.08/x
3. Step 3: Cross multiply
   56,019.58x = 77,306.88 × 30,869.08
4. Step 4: Simplify right side
   56,019.58x = 2,386,392,263.27
5. Step 5: Solve for x
   x = 2,386,392,263.27/56,019.58
6. Step 6: Final answer
   x = 42,599.25