Finding the Fourth Proportional to 70,776.56, 105,597.82 and 56,478.44

Step by Step Solution

1. Step 1: Write the proportion equation
   70,776.56 : 105,597.82 = 56,478.44 : x
2. Step 2: Convert to fraction form
   70,776.56/105,597.82 = 56,478.44/x
3. Step 3: Cross multiply
   70,776.56x = 105,597.82 × 56,478.44
4. Step 4: Simplify right side
   70,776.56x = 5,964,000,141.00
5. Step 5: Solve for x
   x = 5,964,000,141.00/70,776.56
6. Step 6: Final answer
   x = 84,265.19