Finding the Fourth Proportional to 118,194.81, 163,105.61 and 64,479.81

Step by Step Solution

1. Step 1: Write the proportion equation
   118,194.81 : 163,105.61 = 64,479.81 : x
2. Step 2: Convert to fraction form
   118,194.81/163,105.61 = 64,479.81/x
3. Step 3: Cross multiply
   118,194.81x = 163,105.61 × 64,479.81
4. Step 4: Simplify right side
   118,194.81x = 10,517,018,389.22
5. Step 5: Solve for x
   x = 10,517,018,389.22/118,194.81
6. Step 6: Final answer
   x = 88,980.38