Finding the Fourth Proportional to 84,499.16, 116,484.61 and 64,320.89

Step by Step Solution

1. Step 1: Write the proportion equation
   84,499.16 : 116,484.61 = 64,320.89 : x
2. Step 2: Convert to fraction form
   84,499.16/116,484.61 = 64,320.89/x
3. Step 3: Cross multiply
   84,499.16x = 116,484.61 × 64,320.89
4. Step 4: Simplify right side
   84,499.16x = 7,492,393,464.90
5. Step 5: Solve for x
   x = 7,492,393,464.90/84,499.16
6. Step 6: Final answer
   x = 88,668.26