Finding the Fourth Proportional to 64,828.33, 89,259.50 and 55,118.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,828.33 : 89,259.50 = 55,118.69 : x
2. Step 2: Convert to fraction form
   64,828.33/89,259.50 = 55,118.69/x
3. Step 3: Cross multiply
   64,828.33x = 89,259.50 × 55,118.69
4. Step 4: Simplify right side
   64,828.33x = 4,919,865,988.16
5. Step 5: Solve for x
   x = 4,919,865,988.16/64,828.33
6. Step 6: Final answer
   x = 75,890.68