Finding the Fourth Proportional to 64,733.12, 89,064.56 and 50,561.36

Step by Step Solution

1. Step 1: Write the proportion equation
   64,733.12 : 89,064.56 = 50,561.36 : x
2. Step 2: Convert to fraction form
   64,733.12/89,064.56 = 50,561.36/x
3. Step 3: Cross multiply
   64,733.12x = 89,064.56 × 50,561.36
4. Step 4: Simplify right side
   64,733.12x = 4,503,225,281.40
5. Step 5: Solve for x
   x = 4,503,225,281.40/64,733.12
6. Step 6: Final answer
   x = 69,566.02