Finding the Fourth Proportional to 64,936, 89,611.76 and 35,128

Step by Step Solution

1. Step 1: Write the proportion equation
   64,936 : 89,611.76 = 35,128 : x
2. Step 2: Convert to fraction form
   64,936/89,611.76 = 35,128/x
3. Step 3: Cross multiply
   64,936x = 89,611.76 × 35,128
4. Step 4: Simplify right side
   64,936x = 3,147,881,905.28
5. Step 5: Solve for x
   x = 3,147,881,905.28/64,936
6. Step 6: Final answer
   x = 48,476.68