Finding the Fourth Proportional to 118,858.84, 164,026.42 and 65,142.66

Step by Step Solution

1. Step 1: Write the proportion equation
   118,858.84 : 164,026.42 = 65,142.66 : x
2. Step 2: Convert to fraction form
   118,858.84/164,026.42 = 65,142.66/x
3. Step 3: Cross multiply
   118,858.84x = 164,026.42 × 65,142.66
4. Step 4: Simplify right side
   118,858.84x = 10,685,117,309.08
5. Step 5: Solve for x
   x = 10,685,117,309.08/118,858.84
6. Step 6: Final answer
   x = 89,897.54