Finding the Fourth Proportional to 69,215.30, 103,677.15 and 56,093.30

Step by Step Solution

1. Step 1: Write the proportion equation
   69,215.30 : 103,677.15 = 56,093.30 : x
2. Step 2: Convert to fraction form
   69,215.30/103,677.15 = 56,093.30/x
3. Step 3: Cross multiply
   69,215.30x = 103,677.15 × 56,093.30
4. Step 4: Simplify right side
   69,215.30x = 5,815,593,478.10
5. Step 5: Solve for x
   x = 5,815,593,478.10/69,215.30
6. Step 6: Final answer
   x = 84,021.79