Finding the Fourth Proportional to 118,705.72, 163,814.16 and 64,994.26

Step by Step Solution

1. Step 1: Write the proportion equation
   118,705.72 : 163,814.16 = 64,994.26 : x
2. Step 2: Convert to fraction form
   118,705.72/163,814.16 = 64,994.26/x
3. Step 3: Cross multiply
   118,705.72x = 163,814.16 × 64,994.26
4. Step 4: Simplify right side
   118,705.72x = 10,646,980,106.72
5. Step 5: Solve for x
   x = 10,646,980,106.72/118,705.72
6. Step 6: Final answer
   x = 89,692.22