Finding the Fourth Proportional to 118,081.20, 162,951 and 64,366.20

Step by Step Solution

1. Step 1: Write the proportion equation
   118,081.20 : 162,951 = 64,366.20 : x
2. Step 2: Convert to fraction form
   118,081.20/162,951 = 64,366.20/x
3. Step 3: Cross multiply
   118,081.20x = 162,951 × 64,366.20
4. Step 4: Simplify right side
   118,081.20x = 10,488,536,656.20
5. Step 5: Solve for x
   x = 10,488,536,656.20/118,081.20
6. Step 6: Final answer
   x = 88,824.78