Finding the Fourth Proportional to 64,699.04, 89,333.35 and 63,665.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,699.04 : 89,333.35 = 63,665.69 : x
2. Step 2: Convert to fraction form
   64,699.04/89,333.35 = 63,665.69/x
3. Step 3: Cross multiply
   64,699.04x = 89,333.35 × 63,665.69
4. Step 4: Simplify right side
   64,699.04x = 5,687,468,761.93
5. Step 5: Solve for x
   x = 5,687,468,761.93/64,699.04
6. Step 6: Final answer
   x = 87,906.54