Finding the Fourth Proportional to 64,488.72, 88,993.18 and 35,806.90

Step by Step Solution

1. Step 1: Write the proportion equation
   64,488.72 : 88,993.18 = 35,806.90 : x
2. Step 2: Convert to fraction form
   64,488.72/88,993.18 = 35,806.90/x
3. Step 3: Cross multiply
   64,488.72x = 88,993.18 × 35,806.90
4. Step 4: Simplify right side
   64,488.72x = 3,186,569,485.22
5. Step 5: Solve for x
   x = 3,186,569,485.22/64,488.72
6. Step 6: Final answer
   x = 49,412.82