Finding the Fourth Proportional to 118,696.74, 163,801.49 and 64,981.59

Step by Step Solution

1. Step 1: Write the proportion equation
   118,696.74 : 163,801.49 = 64,981.59 : x
2. Step 2: Convert to fraction form
   118,696.74/163,801.49 = 64,981.59/x
3. Step 3: Cross multiply
   118,696.74x = 163,801.49 × 64,981.59
4. Step 4: Simplify right side
   118,696.74x = 10,644,081,264.57
5. Step 5: Solve for x
   x = 10,644,081,264.57/118,696.74
6. Step 6: Final answer
   x = 89,674.59