Finding the Fourth Proportional to 84,495.72, 116,479.89 and 64,317.45

Step by Step Solution

1. Step 1: Write the proportion equation
   84,495.72 : 116,479.89 = 64,317.45 : x
2. Step 2: Convert to fraction form
   84,495.72/116,479.89 = 64,317.45/x
3. Step 3: Cross multiply
   84,495.72x = 116,479.89 × 64,317.45
4. Step 4: Simplify right side
   84,495.72x = 7,491,689,501.08
5. Step 5: Solve for x
   x = 7,491,689,501.08/84,495.72
6. Step 6: Final answer
   x = 88,663.54