Finding the Fourth Proportional to 117,965, 162,791.70 and 64,973

Step by Step Solution

1. Step 1: Write the proportion equation
   117,965 : 162,791.70 = 64,973 : x
2. Step 2: Convert to fraction form
   117,965/162,791.70 = 64,973/x
3. Step 3: Cross multiply
   117,965x = 162,791.70 × 64,973
4. Step 4: Simplify right side
   117,965x = 10,577,065,124.10
5. Step 5: Solve for x
   x = 10,577,065,124.10/117,965
6. Step 6: Final answer
   x = 89,662.74