Finding the Fourth Proportional to 118,683.91, 163,785.71 and 64,968.00

Step by Step Solution

1. Step 1: Write the proportion equation
   118,683.91 : 163,785.71 = 64,968.00 : x
2. Step 2: Convert to fraction form
   118,683.91/163,785.71 = 64,968.00/x
3. Step 3: Cross multiply
   118,683.91x = 163,785.71 × 64,968.00
4. Step 4: Simplify right side
   118,683.91x = 10,640,829,555.50
5. Step 5: Solve for x
   x = 10,640,829,555.50/118,683.91
6. Step 6: Final answer
   x = 89,656.88