Finding the Fourth Proportional to 118,498.22, 163,531.54 and 64,782.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,498.22 : 163,531.54 = 64,782.17 : x
2. Step 2: Convert to fraction form
   118,498.22/163,531.54 = 64,782.17/x
3. Step 3: Cross multiply
   118,498.22x = 163,531.54 × 64,782.17
4. Step 4: Simplify right side
   118,498.22x = 10,593,928,431.50
5. Step 5: Solve for x
   x = 10,593,928,431.50/118,498.22
6. Step 6: Final answer
   x = 89,401.58