Finding the Fourth Proportional to 56,388.29, 77,812.20 and 30,894.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,388.29 : 77,812.20 = 30,894.62 : x
2. Step 2: Convert to fraction form
   56,388.29/77,812.20 = 30,894.62/x
3. Step 3: Cross multiply
   56,388.29x = 77,812.20 × 30,894.62
4. Step 4: Simplify right side
   56,388.29x = 2,403,978,195.89
5. Step 5: Solve for x
   x = 2,403,978,195.89/56,388.29
6. Step 6: Final answer
   x = 42,632.58