Finding the Fourth Proportional to 90,564.78, 124,954.11 and 56,607.83

Step by Step Solution

1. Step 1: Write the proportion equation
   90,564.78 : 124,954.11 = 56,607.83 : x
2. Step 2: Convert to fraction form
   90,564.78/124,954.11 = 56,607.83/x
3. Step 3: Cross multiply
   90,564.78x = 124,954.11 × 56,607.83
4. Step 4: Simplify right side
   90,564.78x = 7,073,380,860.49
5. Step 5: Solve for x
   x = 7,073,380,860.49/90,564.78
6. Step 6: Final answer
   x = 78,103.00