Finding the Fourth Proportional to 117,960, 162,784.80 and 64,968

Step by Step Solution

1. Step 1: Write the proportion equation
   117,960 : 162,784.80 = 64,968 : x
2. Step 2: Convert to fraction form
   117,960/162,784.80 = 64,968/x
3. Step 3: Cross multiply
   117,960x = 162,784.80 × 64,968
4. Step 4: Simplify right side
   117,960x = 10,575,802,886.40
5. Step 5: Solve for x
   x = 10,575,802,886.40/117,960
6. Step 6: Final answer
   x = 89,655.84