Finding the Fourth Proportional to 118,320.35, 163,288.70 and 64,610.35

Step by Step Solution

1. Step 1: Write the proportion equation
   118,320.35 : 163,288.70 = 64,610.35 : x
2. Step 2: Convert to fraction form
   118,320.35/163,288.70 = 64,610.35/x
3. Step 3: Cross multiply
   118,320.35x = 163,288.70 × 64,610.35
4. Step 4: Simplify right side
   118,320.35x = 10,550,140,058.05
5. Step 5: Solve for x
   x = 10,550,140,058.05/118,320.35
6. Step 6: Final answer
   x = 89,165.90