Finding the Fourth Proportional to 118,634.98, 163,716.27 and 64,920.00

Step by Step Solution

1. Step 1: Write the proportion equation
   118,634.98 : 163,716.27 = 64,920.00 : x
2. Step 2: Convert to fraction form
   118,634.98/163,716.27 = 64,920.00/x
3. Step 3: Cross multiply
   118,634.98x = 163,716.27 × 64,920.00
4. Step 4: Simplify right side
   118,634.98x = 10,628,459,877.91
5. Step 5: Solve for x
   x = 10,628,459,877.91/118,634.98
6. Step 6: Final answer
   x = 89,589.60