Finding the Fourth Proportional to 118,904.47, 164,083.80 and 65,188.31

Step by Step Solution

1. Step 1: Write the proportion equation
   118,904.47 : 164,083.80 = 65,188.31 : x
2. Step 2: Convert to fraction form
   118,904.47/164,083.80 = 65,188.31/x
3. Step 3: Cross multiply
   118,904.47x = 164,083.80 × 65,188.31
4. Step 4: Simplify right side
   118,904.47x = 10,696,345,620.38
5. Step 5: Solve for x
   x = 10,696,345,620.38/118,904.47
6. Step 6: Final answer
   x = 89,957.47