Finding the Fourth Proportional to 118,164, 163,066.32 and 65,172

Step by Step Solution

1. Step 1: Write the proportion equation
   118,164 : 163,066.32 = 65,172 : x
2. Step 2: Convert to fraction form
   118,164/163,066.32 = 65,172/x
3. Step 3: Cross multiply
   118,164x = 163,066.32 × 65,172
4. Step 4: Simplify right side
   118,164x = 10,627,358,207.04
5. Step 5: Solve for x
   x = 10,627,358,207.04/118,164
6. Step 6: Final answer
   x = 89,937.36