Finding the Fourth Proportional to 64,611.98, 89,164.63 and 35,931.03

Step by Step Solution

1. Step 1: Write the proportion equation
   64,611.98 : 89,164.63 = 35,931.03 : x
2. Step 2: Convert to fraction form
   64,611.98/89,164.63 = 35,931.03/x
3. Step 3: Cross multiply
   64,611.98x = 89,164.63 × 35,931.03
4. Step 4: Simplify right side
   64,611.98x = 3,203,776,706.02
5. Step 5: Solve for x
   x = 3,203,776,706.02/64,611.98
6. Step 6: Final answer
   x = 49,584.87