Finding the Fourth Proportional to 56,365.18, 77,782.76 and 30,870.28

Step by Step Solution

1. Step 1: Write the proportion equation
   56,365.18 : 77,782.76 = 30,870.28 : x
2. Step 2: Convert to fraction form
   56,365.18/77,782.76 = 30,870.28/x
3. Step 3: Cross multiply
   56,365.18x = 77,782.76 × 30,870.28
4. Step 4: Simplify right side
   56,365.18x = 2,401,175,580.37
5. Step 5: Solve for x
   x = 2,401,175,580.37/56,365.18
6. Step 6: Final answer
   x = 42,600.34