Finding the Fourth Proportional to 109,864.85, 164,665.43 and 56,581.91

Step by Step Solution

1. Step 1: Write the proportion equation
   109,864.85 : 164,665.43 = 56,581.91 : x
2. Step 2: Convert to fraction form
   109,864.85/164,665.43 = 56,581.91/x
3. Step 3: Cross multiply
   109,864.85x = 164,665.43 × 56,581.91
4. Step 4: Simplify right side
   109,864.85x = 9,317,083,858.50
5. Step 5: Solve for x
   x = 9,317,083,858.50/109,864.85
6. Step 6: Final answer
   x = 84,804.95