Finding the Fourth Proportional to 56,392.62, 77,818.74 and 30,894.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,392.62 : 77,818.74 = 30,894.30 : x
2. Step 2: Convert to fraction form
   56,392.62/77,818.74 = 30,894.30/x
3. Step 3: Cross multiply
   56,392.62x = 77,818.74 × 30,894.30
4. Step 4: Simplify right side
   56,392.62x = 2,404,155,499.18
5. Step 5: Solve for x
   x = 2,404,155,499.18/56,392.62
6. Step 6: Final answer
   x = 42,632.45