Finding the Fourth Proportional to 56,009.62, 77,289.72 and 30,859.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,009.62 : 77,289.72 = 30,859.12 : x
2. Step 2: Convert to fraction form
   56,009.62/77,289.72 = 30,859.12/x
3. Step 3: Cross multiply
   56,009.62x = 77,289.72 × 30,859.12
4. Step 4: Simplify right side
   56,009.62x = 2,385,092,744.25
5. Step 5: Solve for x
   x = 2,385,092,744.25/56,009.62
6. Step 6: Final answer
   x = 42,583.63